Lawrence M. Witmer, PhD
Professor of Anatomy
Chang Ying-Chien Professor of Paleontology
OU Presidential Research Scholar 2004-2009

Dept. of Biomedical Sciences
College of Osteopathic Medicine
Life Science Building, Rm 123
Ohio University
Athens, Ohio 45701 USA

Phone: 740 593 9489
Fax: 740 593 2400
Email: witmerL@ohio.edu

 

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Curriculum Vitae
 

Lawrence M. Witmer, PhD

Department of Biomedical Sciences
College of Osteopathic Medicine
Ohio University
Athens, Ohio  45701  USA
Telephone: (740) 593-9489
FAX: (740) 593-2400
E-mail: witmerL@ohiou.edu or
witmer@oucom.ohiou.edu
individual
website: http://www.oucom.ohiou.edu/dbms-witmer/
WitmerLab website: http://www.oucom.ohiou.edu/dbms-witmer/lab.htm
WitmerLab YouTube website: http://www.youtube.com/witmerlab
OUµCT website: http://www.oucom.ohiou.edu/ou-microct/

Personal Information

Born: 10 October 1959, Rochester, New York
Marital Status: Married to Patricia Lynn Morris Witmer
Children: Samuel H. Witmer, born 1993
Citizenship: United States of America
 

Education

1992    PhD, Cell Biology and Anatomy (Functional Anatomy and Evolution), The Johns Hopkins University School of Medicine, Baltimore, Maryland.  Dissertation: Ontogeny, Phylogeny, and Air Sacs: The Importance of Soft-tissue Inferences in the Interpretation of Facial Evolution in Archosauria.

1987    MA, Systematics and Ecology (Evolutionary Biology and Vertebrate Paleontology), The University of Kansas, Lawrence, Kansas.  Thesis: The Cranial Air Sac System of Mesozoic Birds.

1982    BA, Biology, Cornell University, Ithaca, New York.

 

Present Status

Professor, Department of Biomedical Sciences, College of Osteopathic Medicine, Ohio University (since July 2005; Associate Professor from 2001–2005; Assistant Professor from 1995–2001)

Chang Ying-Chien Endowed Professorship of Paleontology 2007 – present

Ohio University Presidential Research Scholar (Biomedical & Life Sciences) 2004–2009

Adjunct Assistant Professor, Department of Geological Sciences, Ohio University (since November 1998)



Other Professional Experience

2007 – present     President-Elect, International Society of Vertebrate Morphology

2006 – present     Director, Ohio University MicroCT Scanning Facility (OUµCT)

2006 – present     Member, Ohio University Council on Research, Scholarship, and Creative Activity

2006 – present     Member, Ohio Center for Ecology and Evolutionary Studies Advisory Committee

2004 – present      Basic Science Liaison, Otorhinolaryngology-Head & Neck Surgery Residency Program Advisory Committee, Ohio University College of Osteopathic Medicine

2002 – present      Society of Vertebrate Paleontology Lanzendorf Paleoart Prize Committee, Member since 2002, Chair 2004–2006

2001 – 2005         Research and Scholarly Affairs Committee, Ohio University College of Osteopathic Medicine  

2001 – 2003         Advisory Committee, Department of Biomedical Sciences, Ohio University College of Osteopathic Medicine  

1999 – 2004         Basic Science Liaison, Pediatrics Residency Program Advisory Committee, Ohio University College of Osteopathic Medicine

1999 – 2001         Director, Ecology and Evolutionary Biology Focus Group, Ohio University

1997 – present      Basic Science Liaison, General Surgery Residency Program Advisory Committee, Ohio University College of Osteopathic Medicine

1995 – present      Coordinator of PCC Gross Anatomical Instruction, Ohio University College of Osteopathic Medicine

1995 – present      Member, PCC Steering Committee, Ohio University College of Osteopathic Medicine

1995 – present      Member, Board of Editors, Ohio Research and Clinical Review, College of Osteopathic Medicine

1995 – 2001         Member, Ecology and Evolutionary Biology Graduate Steering Committee, College of Arts and Sciences

1994 – present      Member and Chair (1994–1998) Society of Vertebrate Paleontology Honorary Membership  Committee

1994 – 1995         Course Director: Human Gross Anatomy and Embryology, New York College of Osteopathic Medicine  

1992 – 1995         Assistant Professor, Department of Anatomy, New York  College of Osteopathic Medicine, Old Westbury, New York

 

Completed Students Advised & Theses

(* indicates Witmer was main advisor, otherwise Witmer was committee member)

2007   *Justin Tickhill (Ohio University)—MS: “The Virtual Pig Head: digital imaging of cephalic anatomy.” Current status: employed in Athens, Ohio.

2006   *Casey M. Holliday (Ohio University)—PhD: “Evolution and function of the jaw musculature and adductor chamber of archosaurs (crocodilians, dinosaurs, and birds).” Current status: Assistant Professor, Joan C. Edwards School of Medicine at Marshall University

2004   Andrew Lammers (Ohio University)—PhD: “The biodynamics of arboreal locomotion in the gray short-tailed opossum (Monodelphis domestica).” Current status: Assistant Professor, Cleveland State University.

2003   *Andrew B. Clifford (Ohio University)—MS: “Narial novelty in mammals: case studies and rules of construction” Witmer lab 2001–2003.  Current status: Brown University, PhD student.

2003   Phil Senter (Northern Illinois University)—PhD: “Taxon sampling artifacts and the phylogenetic position of Aves.”  Current status: Assistant Professor, Lamar State College-Orange, Texas

2003   Richard Essner (Ohio University)—PhD: “Locomotion, morphology, and habitat use in arboreal squirrels (Rodentia: Sciuridae)”  Current status: University of Pennsylvania, NIH postdoc.

2003   Peter M. Larson (Ohio University)—PhD: “Chondrocranial evolution in Rana tadpoles: integrating form, function, ontogeny, and phylogeny”  Current status: Assistant Professor, St. Anselm College, NH.

2003   Patrick M. O’Connor (SUNY Stony Brook): “Pulmonary pneumaticity in extant birds and fossil archosaurs” Witmer lab 2000–2002.  Current status: Assistant Professor, Ohio University College of Osteopathic Medicine

2002   *Jayc C. Sedlmayr (Ohio University)—PhD: “Anatomy, evolution, and functional significance of cephalic vasculature in Archosauria.” Witmer lab 1997–2002.  Current status: UCLA postdoc.

2001   Jeffrey S. Willey (Ohio University)—MS: “Mechanics of the semi-erect posture: Limb function and whole body mechanics in Alligator mississippiensis.” Current status: Clemson University, PhD student.

2001   Elicia N. Thompson (Ohio University)—MS: “A morphometrics and kinetic analysis of the development of the feeding apparatus of Monodelphis domestica.”  Current status: dentistry student, University of Washington

2000   *Andrew B. Clifford (Ohio University)—BS Honors: “The narial anatomy of hooded seal (Cystophora cristata) with respect to other Carnivora.” Witmer lab 1999–2000.  Current status: Brown University, PhD student.

2000   *Michael J. Papp (Ohio University)—MS: “A critical appraisal of buccal soft-tissue anatomy in ornithischian dinosaurs.”  Witmer lab 1996–2000.  Current status: Associate Geologist at Parsons Engineering Science in Cincinnati, Ohio.

   

Professional Society Memberships

American Ornithologists’ Union  
Palaeontological Association  
Sigma Xi
Society of Avian Paleontology & Evolution 

Society of Systematic Biologists  
Society of Vertebrate Paleontology  
International Society of Vertebrate Morphology

   

Competitive Grants and Awards

2005   National Science Foundation: “Brain evolution in archosaurs: new implications for scaling, function and the evolution of the modern conditions in birds and crocodilians” with G. R. Hurlburt and R. C. Ridgley (Witmer senior PI). $171,262.00.

2004   National Science Foundation: “The ear regions of archosaurs: the transition to the modern avian and crocodilian conditions and functional implications for hearing and balance in dinosaurs.” $280,293.00.

2004  National Science Foundation: “Evolution of the jaw musculature of archosaurs.” Dissertation Improvement Grant for Casey M. Holliday, $11,028.00.

2003   Ohio University Baker Award: “Unusual nasal structures in dinosaurs and other vertebrates.” $11,719.00

2000    National Science Foundation: “Anatomy, evolution, and functional significance of cephalic vasculature in Archosauria, with special emphasis on birds, crocodilians, and nonavian dinosaurs.” Dissertation Improvement Grant for Jayc C. Sedlmayr, $9980.00

1997    The Dinosaur Society: for supplementary publication costs of a Memoir of the Society of Vertebrate Paleontology, $980.40

1996    National Science Foundation: “Unusual narial structures in dinosaurs and other vertebrates: a case study in the functional interpretation of anatomical novelty in the fossil record” with Scott D. Sampson, PhD, $180,000.00

1995    The Dinosaur Society: “New insight into Deinonychus, Tenontosaurus, and other dinosaurs from the Cloverly Formation (Lower Cretaceous) of south-central Montana” with W. Desmond Maxwell, PhD, $7225.00

1994    The Dinosaur Society: for publication costs of a Memoir of the Society of Vertebrate Paleontology, $8400.00

1991    National Science Foundation Dissertation Improvement Grant (NSF BSR 9112070): “The evolution of the skull and air sinuses in Archosauria”, $9885.00

1991    Grant-In-Aid of Research from Sigma Xi: “Evolution of the skull and air sinuses in crocodylians and other archosaurs: New evidence from Papua New Guinean crocodiles,” $545.00

1987-91Fellowship from the Lucille P. Markey Charitable Trust, The Johns Hopkins University School of Medicine.

1990    Alexander Wetmore Award from the American Ornithologists’ Union: “Ontogeny, heterochrony, air sacs, and the evolution of the avian skull,” $1210.00

            Grant-In-Aid of Research from Sigma Xi: “Evolution of the skull and air sinuses in crocodylians and other archosaurs,” $489.00

1989    Marcia Brady Tucker Award from the American Ornithologists’ Union for travel to the 107th Stated Meeting of the American Ornithologists’ Union, Pittsburgh, Pennsylvania, August, $377.50

1985    Alexander Wetmore Award from the American Ornithologists’ Union: “The tympanicomandibular siphonial system: Implications for avian origins and systematics,” $870.00

   

Published papers

1. Witmer, L. M., R. C. Ridgely, D. L. Dufeau, and M. C. Semones. 2008. Using CT to peer into the past: 3D visualization of the brain and ear regions of birds, crocodiles, and nonavian dinosaurs. Pp. 67–88 in H. Endo and R. Frey (eds.), Anatomical Imaging: Towards a New Morphology. Springer-Verlag, Tokyo.

2. Witmer, L. M., and R. C. Ridgely. in press. Structure of the brain cavity and inner ear of the centrosaurine ceratopsid Pachyrhinosaurus based on CT scanning and 3D visualization. National Research Council of Canada Monograph Series.

3. Witmer, L. M. and R. C. Ridgely. In press. The paranasal air sinuses of predatory and armored dinosaurs (Archosauria: Theropoda & Ankylosauria) and their contribution to cephalic architecture. Anatomical Record 291:xxx–xxx.

4. Holliday, C. M. and L. M. Witmer. In press. Cranial kinesis in dinosaurs: intracranial joints, protractor muscles, and their significance for cranial evolution and function in diapsids. Journal of Vertebrate Paleontology.

5. Witmer, L. M. and R. C. Ridgely. In press. The Cleveland tyrannosaur skull (Nanotyrannus or Tyrannosaurus): new findings based on CT scanning, with special reference to the braincase. Kirtlandia.

6. Hurlburt, G. R., R. C. Ridgely, and L. M. Witmer. In press. Relative size of brain and cerebrum in Tyrannosaurus rex: an analysis using brain-endocast quantitative relationships in extant alligators. in Origin, Systematics, and Paleobiology of the Tyrannosauridae, J. M. Parrish, M Henderson, P. J. Currie, E. Koppelhus (Eds.), Northern Illinois University Press.

7. Sereno, P. C., J. A. Wilson, L. M. Witmer, J. A. Whitlock, A. Maga, O. Ide, and T. A. Rowe. 2007. Structural extremes in a Cretaceous dinosaur. PLoS ONE 2(11): e1230. doi:10.1371/journal.pone.0001230.
PLoS Supplementary Information
Additional information and downloads on the WitmerLab site
Additional information and downloads on the Project Exploration site
Additional information and downloads on the DigiMorph site

8. Sampson, S. D. and L. M. Witmer. 2007. Craniofacial anatomy of Majungasaurus crenatissimus (Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar. Memoirs of the Society of Vertebrate Paleontology 8, Journal of Vertebrate Paleontology 27(Supplement to 2):32–102.
Additional information, downloads, and 3D digital visualizations on the WitmerLab site

9. Holliday, C. M. and L. M. Witmer. 2007. Archosaur adductor chamber evolution: integration of musculoskeletal and topological criteria in jaw muscle homology. Journal of Morphology 268:457–484.
• Additional information and downloads on Casey Holliday's site

10. Holliday, C. M., R. C. Ridgely, A. M. Balanoff, and L. M. Witmer*. 2006. Cephalic vascular anatomy in flamingos (Phoenicopterus ruber) based on novel vascular injection and computed tomographic imaging analyses. Anatomical Record 288A(10)1031–41.
Additional information and downloads on the WitmerLab site

11. Hieronymus, T. L., R. C. Ridgely, and L. M. Witmer. 2006. Structure of white rhinoceros (Ceratotherium simum) horn investigated by x-ray computed tomography and histology with implications for growth and external form. Journal of Morphology 267:1172–1176.
Additional information and downloads on the WitmerLab site.

12. Clifford, A. B. and L. M. Witmer.  2004.  Case studies in novel narial anatomy: 3. Structure and function of the nasal cavity of saiga (Artiodactyla: Bovidae: Saiga tatarica). Journal of Zoology 264:217–230.
Digital Visualizations on DigiMorph.org

13. Norman, D. B., L. M. Witmer, and D. B. Weishampel.  2004.  Basal Ornithischia. Pp. 325–334  in The Dinosauria, 2nd Edition, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

14. Norman, D. B., L. M. Witmer, and D. B. Weishampel.  2004.  Basal Thyreophora. Pp. 335-342 in The Dinosauria, 2nd Edition, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

15. Norman, D. B., H.-D. Sues, L. M. Witmer, and R. A. Coria.  2004.  Basal Ornithopoda. Pp. 393–412 in The Dinosauria, 2nd Edition, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

16. Witmer, L. M., R. C. Ridgely, H. Mayle, D. Adams.  2004.  The best of both worlds: integrating CT and MR in a study of pig knees. RT Image 17(32):16–19.
RT Image web site
Digital Visualizations on DigiMorph.org

17. Witmer, L. M.  2004.  Inside the oldest bird brain. Nature 430:619–620.

18. Clifford, A. B. and L. M. Witmer.  2004.  Case studies in novel narial anatomy: 2. The enigmatic nose of moose (Artiodactyla: Cervidae: Alces alces). Journal of Zoology 262:339–360.
Accompanying Nature "News & Views"
Digital visualizations on DigiMorph.org

19. Witmer, L. M., S. Chatterjee, J. Franzosa, and T. Rowe.  2003.  Neuroanatomy of flying reptiles and implications for flight, posture and behaviour. Nature 425:950–953.
Accompanying Nature "News & Views"
• Digital visualizations on DigiMorph.org: Anhanguera, Rhamphorhynchus

20. You H.-L., Luo Z.-X.,N. H. Shubin, L. M. Witmer, Tang A.-L, and Tang F.  2003.  The earliest-known duck-billed dinosaur from deposits of late Early Cretaceous age in northwestern China and hadrosaur evolution. Cretaceous Research 24:346–355.

21. Hill, R. V., L. M. Witmer, M.A. Norell. 2003.  A new specimen of Pinacosaurus grangeri (Dinosauria: Ornithischia) from the Late Cretaceous of Mongolia: ontogeny and phylogeny of ankylosaurs. American Museum Novitates 3395:1–29.

22. Bimber, O., S. M. Gatesy, L. M. Witmer, R. Raskar, and L. M. Encarnação.  2002.  Merging fossil specimens with computer-generated information. IEEE Computer 35(9):25–30.  

23. Witmer, L. M.  2002.  The debate on avian ancestry: phylogeny, function, and fossils. In Mesozoic Birds: Above the Heads of Dinosaurs, L. M. Chiappe and L. M. Witmer (eds.), University of California Press, Berkeley.  

24. Sedlmayr, J. C. and L. M. Witmer.  2002.  Rapid technique for imaging the blood vascular system using stereoangiography. Anatomical Record 267(4):330–336.

25. Witmer, L. M.  2001.  Nostril position in dinosaurs and other vertebrates and its significance for nasal function.  Science 293:850–853.  

26. Witmer, L. M.  2001.  The role of Protoavis in the debate on avian origins. pp. 537–548  In New Perspectives on the Origin and Early Evolution of Birds, J. A. Gauthier and L. F. Gall (eds.), Yale Peabody Museum, New Haven.  

27. Witmer, L. M.  2000.  Science, art, and dinosaurs. Essay and review of Dinosaur Imagery: The Science of Lost Worlds and Jurassic Art, edited by C. R. Crumly. Science 5489:460–461.  

28. Witmer, L. M.  1999.  New aspects of avian origins: roundtable report. pp. 327–334 in Avian Paleontology at the Close of the 20th Century: Proceedings of the 4th International Meeting of the Society of Avian Paleontology and Evolution, S. L. Olson (ed.), Smithsonian Contributions to Paleobiology 89, Washington.

29. Witmer, L. M., S. D. Sampson, and N. Solounias.  1999. The proboscis of tapirs (Tapirus terrestris): a case study in novel narial anatomy. Journal of Zoology 249:249–267.  

30. Solounias, N., J. M. Plavcan, J. Quade and L. M. Witmer. 1999.  The paleoecology of the Pikermian Biome and the savanna myth.  pp. 426-453.  In Hominoid Evolution and Climatic Change in Europe. Volume 1: The Evolution of Neogene Terrestrial Ecosystems in Europe.  J. Agustí, L. Rook, and P. Andrews (eds.).  Cambridge University Press, New York.

31. Witmer, L. M. 1999. The phylogenetic history of paranasal air sinuses. pp. 21–34 in The Paranasal Sinuses of Higher Primates: Development, Function and Evolution, T. Koppe, H. Nagai, and K. W. Alt (eds.), Quintessence, Chicago.

32. Sampson, S. D., L. M. Witmer, C. A. Forster, D. W. Krause, P. M. O’Connor, P. Dodson, and F. Ravoavy.  1998.  Predatory dinosaur remains from Madagascar: implications for the Cretaceous biogeography of Gondwana. Science 280:1048–1051.  

33. Witmer, L. M.  1998.  Dinosaurs for adults.  Review of The Complete Dinosaur by J. O. Farlow and M. K. Brett-Surman.  Science 280:223.

34.  Witmer, L. M.  1997.  Craniofacial air sinus systems.  pp. 151–159 in The Encyclopedia of Dinosaurs, P. J. Currie and K. Padian (eds.), Academic Press, New York.

35.  Witmer, L. M.  1997.  Foreword.  pp. vii–xii in The Rise of Birds: 225 Million Years of Evolution, by S. Chatterjee, Johns Hopkins University Press, Baltimore.

36. Witmer, L. M.   1997.  Flying feathers.  Review of The Origin and Evolution of Birds by Alan Feduccia.  Science 276:1209–1210.

37. Witmer, L. M.  1997.  A new missing link.  Nature 387:349–350.

38. Witmer, L. M.  1997.  The evolution of the antorbital cavity of archosaurs: a study in soft-tissue reconstruction in the fossil record with an analysis of the function of pneumaticity.  Memoirs of the Society of Vertebrate Paleontology, Journal of Vertebrate Paleontology 17(Supplement to 1):1–73.

39. Witmer, L. M.  1995.  Homology of facial structures in extant archosaurs (birds and crocodilians), with special reference to paranasal pneumaticity and nasal conchae.  Journal of Morphology 225:269–327.

40. Witmer, L. M.  1995.  The Extant Phylogenetic Bracket and the importance of reconstructing soft tissues in fossils.  pp. 19–33 in Functional Morphology in Vertebrate Paleontology, J. J. Thomason (ed.), Cambridge Univ. Press, New York.

41. Baumel, J. J. and Witmer, L. M.  1993.   Osteologia. pp. 45–132 in Handbook of Avian Anatomy: Nomina Anatomica Avium, Second Edition, J. J. Baumel (ed.),  Publications of the Nuttall Ornithological Club No. 23, Cambridge.

42.  Witmer, L. M. and Rose, K. D.  1991.  Biomechanics of the jaw apparatus of the gigantic Eocene bird Diatryma: Implications for diet and mode of life. Paleobiology 17:95–120.

43. Witmer, L. M.  1991.  Perspectives on avian origins. pp. 427–466 in Origins of the Higher Groups of Tetrapods: Controversy and Consensus, H.-P. Schultze and L. Trueb (eds.), Cornell University Press, Ithaca.

44. Witmer, L. M.  1990.  The craniofacial air sac system of Mesozoic birds (Aves). Zoological Journal of the Linnean Society. 100:327–378.

45. Weishampel, D. B. and Witmer, L. M.  1990.  Lesothosaurus, Pisanosaurus, and Technosaurus. pp. 416–425 in The Dinosauria, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

46. Weishampel, D. B. and Witmer, L. M.  1990.  Heterodontosauridae. pp. 486–497 in The Dinosauria, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

47. Coombs, W. P., Weishampel, D. B., and Witmer, L. M.  1990. Basal Thyreophora. pp. 427–434 in The Dinosauria, D. B. Weishampel, P. Dodson, and H. Osmólska (Eds.), University of California Press, Berkeley.

48. Witmer, L. M.  1989.  Review: Peter W. Houde: Paleognathous birds from the early Tertiary of the Northern Hemisphere. Journal of Vertebrate Paleontology 9(3):368–369.

49.  Bühler, P., Martin, L. D., and Witmer, L. M.  1988.  Cranial kinesis in the Late Cretaceous birds Hesperornis and Parahesperornis. Auk: Quarterly Journal of Ornithology 105(1):111–122.

50. Witmer, L. M. and Martin, L. D.  1987.  The primitive features of the avian palate with special reference to Mesozoic birds. Documents des Laboratoires de Géologie, Lyon 99:21–40.

51. Witmer, L. M.  1987.  The nature of the antorbital fossa of archosaurs: shifting the null hypothesis.  pp. 230–235 in Fourth Symposium on Mesozoic Terrestrial Ecosystems, Short Papers (P. J. Currie and E. H. Koster, Eds.), Occasional Paper of the Tyrrell Museum of Palaeontology #3, Drumheller, Alberta.

52. Witmer, L. M.  1979.  Host preference by the Mid-Devonian (Moscow Shale) epizoans Hederella filiformis, Aulopora elleri, Spirorbis sp., and Cornulites sp.  Cornell Journal of Biological Science 1979:21–28.

 

Books and Popular Articles

1. Chiappe, L. M. and L. M. Witmer (editors). 2002.  Mesozoic Birds: Above the Heads of Dinosaurs. University of California Press, Berkeley, 520 pp.

2. Witmer, L. M.  2001.  A nose for all reasons. Natural History Magazine, June 2001 110(5):64–71.

3. Maxwell W. D. and L. M. Witmer. 1996. The new Deinonychus. Dinosaur Discoveries 2:1–2.  

4. Witmer, L. M.  1995.  The Search for the Origin of Birds. Franklin Watts, New York.

   

NSF Digital Library Contributions ON dIGIMORPH

1. A. B. Clifford and L. M. Witmer.  2004.  Facial and narial anatomy of saiga. 

2. Ridgely, R. C.  and L. M. Witmer.  2004. Knee anatomy in domestic pigs based on CT/MR fusion.

3. Holliday, C. M., R. C. Ridgely, and L. M. Witmer.  2004.  Head vasculature of the Caribbean flamingo.

4. A. B. Clifford and L. M. Witmer.  2004.  Facial and narial anatomy of moose. 

5. Witmer, L. M., S. Chatterjee, J. Franzosa, and T. Rowe.  2003.  Neuroanatomy and inner ear of the pterosaur Anhanguera.

6. Witmer, L. M., S. Chatterjee, J. Franzosa, and T. Rowe.  2003.  Neuroanatomy and inner ear of the pterosaur Rhamphorhycnhus.

 

Symposia Organized

2001. The Nasal Region of Tetrapods (with W. Maier and Z. Rocek).  Sixth International Congress of Vertebrate Morphology, Jena Germany, 24 July 2001.

1997.  Pneumatization of the Vertebrate Skull (with Thomas Koppe). Fifth International Congress of Vertebrate Morphology, Bristol, England, 17 July 1997.

 

Invited Lectures since 2003

2007   Georgia College and State University, Milledgeville. 12 Nov 2007. “Evolving an on-board flight computer: brains, ears, and the evolution of birds, dinosaurs, and pterosaurs”

2006   Explorer Lecture, Cleveland Museum of Natural History. 08 Dec 2006. “Tyrannosaurus Exposed: Getting into the Head of a Killer.”

            Museum of the Rockies, Montana State University, Bozeman. 16 Nov 2006. “Digital Dinosaurs: Unlocking the Riddles of Dinosaur Skulls Using Advanced Medical Imaging.”

            Symposium on New Approaches to Paleontological Investigation at the American Association for the Advancement of Science Annual Meeting, 17 Feb 2006. “Fleshing Out Dinosaurs: Implications of Brain, Ear, and Nose Structure.”

2005   Symposium on the Origin, Systematics, and Paleobiology of the Tyrannosauridae, Burpee Museum of Natural History and Northern Illinois University, Rockford, IL. 16 Sep 2005. “New insights into the brain and ear region of tyrannosaurs, with implications for sensory organization and behavior.”

            Evolutionary Morphology Seminar Series, Dept. of Organismal Biology and Anatomy, University of Chicago, Chicago, IL. 14 Apr 2005. “Fleshing Out Dinosaurs: Bridging the Present and Past to Redefine Paleontology.”

2004   Earth History and Paleobiology Seminar Series, Harvard University, Cambridge, MA. 16 Nov 2004. “What is Paleontology? Linking the Present to the Past to Flesh Out Fossils.”

            Symposium on Feathered Dinosaurs and the Origin of Flight, San Diego Natural History Museum, San Diego, CA. 13 Sep 2004. “Dinosaurs Take Wing: The Search for the Origin of Birds.”

            Seventh International Congress of Vertebrate Morphology, Boca Raton, FL. 01 Aug 2004. “Fleshing Out Fossils: The Present as the Key to a Very Different Past.” (plenary keynote address)

            Neuroscience Seminar Series, Ohio University, Athens, OH. 27 Feb 2004. “Paleoneuroanatomy and the Inference of Neural and Vestibular Structures in Dinosaurs and Pterodactyls.”

            Annual Robert T. Dorsey Lecture, Cleveland Museum of Natural History, Cleveland, OH. 09 Feb 2004. “Dinosaurs Take Wing: The Origin and Early Radiation of Birds.”

2003   President’s Research Showcase, Ohio University, Athens, OH. 15 Nov 2003. “diNOSE: Putting Dinosaur Noses in Their Place.”

            Sigma-Xi Annual Banquet, Ohio University, Athens, OH. 14 May 2003. “Fleshing Out Dinosaurs: The Present as the Key to a Very Different Past.”

            High-Resolution X-ray CT Facility, University of Texas, Austin, TX. 27 Mar 2003. “Anatomical approaches in the Witmer Lab.”

            Clara Jones Langston Centennial Lecture, University of Texas, Austin, TX. 26 Mar 2003. “Fleshing Out Dinosaurs: The Role of Extant Taxa in Assessing Anatomical Novelty in the Fossil Record.”

 

  Papers Presented at Professional Society Meetings  
(
Indicates a Published Abstract)

2007   ‡ Daniel, J. and L. M. Witmer. 2007. The role of soft tissues in sediment infilling and patterning: an actualistic study with ostrich heads. 67th Annual Meeting of the Society of Vertebrate Paleontology, Austin, TX. Journal of Vertebrate Paleontology 27(Supplement to 3):65A.

Dufeau, D. L. and L. M. Witmer. 2007. Ontogeny and phylogeny of the tympanic pneumatic system of crocodyliform archosaurs. 67th Annual Meeting of the Society of Vertebrate Paleontology, Austin, TX. Journal of Vertebrate Paleontology 27(Supplement to 3):70A.

Hieronymus, T. L. and L. M. Witmer. 2007. Skinning dinosaurs: bony correlates and patterns of cephalic skin evolution in Archosauria. 67th Annual Meeting of the Society of Vertebrate Paleontology, Austin, TX. Journal of Vertebrate Paleontology 27(Supplement to 3):89A.

Holliday, C. M. and L. M. Witmer. 2007. The epipterygoid of crocodyliforms and its significance in the evolution of the orbitotemporal region of eusuchians. 67th Annual Meeting of the Society of Vertebrate Paleontology, Austin, TX. Journal of Vertebrate Paleontology 27(Supplement to 3):90A.

            ‡ Tsuihiji, T., M. Watabe, L. M. Witmer, T. Tsubamoto, K. Tsogtbaatar. 2007. A juvenile skeleton of Tarbosaurus with a nearly complete skull and its implications for ontogenetic change in tyrannosaurids. 67th Annual Meeting of the Society of Vertebrate Paleontology, Austin, TX. Journal of Vertebrate Paleontology 27(Supplement to 3):160A.

            ‡ Holliday, C. M. and L. M. Witmer. 2007. Cranial kinesis in dinosaurs: significance for functional inferences and evolution. 8th International Congress of Vertebrate Morphology, Paris, France. Journal of Morphology 268(12):1085–1086.

            ‡ L. M. Witmer and R. C. Ridgely. 2007. Evolving an on-board flight computer: brains, ears, and exaptation in the evolution of birds and other theropod dinosaurs. 8th International Congress of Vertebrate Morphology, Paris, France. Journal of Morphology 268(12):1150.

            Dufeau, D. L. and L. M. Witmer. 2007. Ontogeny and phylogeny of the tympanic pneumatic system of crocodyliform archosaurs. 8th International Congress of Vertebrate Morphology, Paris, France.

            ‡ Ridgely, R. C. and L. M. Witmer. 2007. Gross anatomical brain region approximation (GABRA): a new technique for assessing brain structure in dinosaurs and other fossil archosaurs. 8th International Congress of Vertebrate Morphology, Paris, France. Journal of Morphology 268(12):1124.

            ‡ Tickhill, J. and L. M. Witmer. 2007. The Virtual Pig head: digital imaging of cephalic anatomy. 8th International Congress of Vertebrate Morphology, Paris, France. Journal of Morphology 268(12):1141.

            ‡ Hieronymus, T. L. and L. M. Witmer. 2007. Turtle beaks, bird beaks, croc beaks? Parallel evolution of rhamphothecae in Sauropsida. 8th International Congress of Vertebrate Morphology, Paris, France. Journal of Morphology 268(12):1083–1084.

            Tickhill, J. and L. M. Witmer. 2007. The Virtual Pig head: digital imaging of cephalic anatomy. Annual Meeting of the Society of Integrative and Comparative Biology, Phoenix, AZ.

            Hieronymus, T. L. and L. M. Witmer. 2007. How dinosaurs build beaks: homology between avian rhamphotheca and diapsid facial scales. Annual Meeting of the Society of Integrative and Comparative Biology, Phoenix, AZ.

            Tsuihiji, T. and L. M. Witmer. 2007. Reconstruction and possible evolutionary changes of muscle and ligament attachments in the occipital region and atlas-axis complex in non-avian theropod dinosaurs. Annual Meeting of the Society of Integrative and Comparative Biology, Phoenix, AZ.

2006   ‡ Dufeau, D. L. and L. M. Witmer. 2006. Tympanic pneumaticity in Archosauria: Recognizing patterns of organization and homology. 66th Annual Meeting of the Society of Vertebrate Paleontology, Ottawa, ON. Journal of Vertebrate Paleontology 26(Suppl. to 3).

            ‡ Hieronymus, T. L. and L. M. Witmer. 2006. Horn morphology of Pachyrhinosaurus and horn evolution in centrosaurine dinosaurs. 66th Annual Meeting of the Society of Vertebrate Paleontology, Ottawa, ON. Journal of Vertebrate Paleontology 26(Suppl. to 3).

            ‡ Holliday, C. M. and L. M. Witmer. 2006. Critical appraisal of cranial kinesis in dinosaurs. 66th Annual Meeting of the Society of Vertebrate Paleontology, Ottawa, ON. Journal of Vertebrate Paleontology 26(Suppl. to 3).

            ‡ Ridgely, R. C. and L. M. Witmer. 2006. Dead on arrival: optimizing CT data acquisition of fossils using modern hospital CT scanners. 66th Annual Meeting of the Society of Vertebrate Paleontology, Ottawa, ON. Journal of Vertebrate Paleontology 26(Suppl. to 3).

            ‡ Ridgely, R. C. and L. M. Witmer. 2006. Braincase morphology in tyrannosaurs using computed tomography and 3D visualization, with special reference to the cerebral endocast and ear region. Annual Meeting of the Society of Integrative and Comparative Biology, Orlando, FL. Journal of Integrative and Comparative Biology 45(6):1183.

            ‡ Holliday, C. M. and L. M. Witmer. 2006. Evolutionary morphology of the orbitotemporal region in Archosauria. Annual Meeting of the Society of Integrative and Comparative Biology, Orlando, FL. Integrative and Comparative Biology 45(6):1014.

            ‡ Hieronymus, T. L. and L. M. Witmer. 2006. From armor to anchor: Character evolution of the skin and horns of rhinos. Annual Meeting of the Society of Integrative and Comparative Biology, Orlando, FL. Integrative and Comparative Biology 45(6):1012.

            ‡ Dufeau, D. L. and L. M. Witmer. 2006. Tympanic pneumaticity in theropod dinosaurs: Recognizing patterns of organization and homology. Annual Meeting of the Society of Integrative and Comparative Biology, Orlando, FL. Integrative and Comparative Biology 45(6):1126.

2005    Rommel, S. A., A. Costidis, L. M. Witmer, R. C. Ridgely, and K. Matassa. 2005. Comparative morphology of the epidural circulation in harbor seals, bottlenose dolphins, and Florida manatees. Society for Marine Mammalogy’s 16th Biennial Conference on the Biology of Marine Mammals, San Diego, CA.

            Chapla, M. E., D. P. Nowacek, S. A. Rommel, V. Sadler, and L. M. Witmer. 2005. Three-dimensional reconstructions of a Florida manatee (Trichechus manatus latirostris) head and isolated ear bone: the search for sound pathways. Society for Marine Mammalogy’s 16th Biennial Conference on the Biology of Marine Mammals, San Diego, CA.

            ‡ Witmer, L. M. and R. C. Ridgely. 2005. Tyrannosaur brain and ear structure: ontogeny and implications for sensory function and behavior. 65th Annual Meeting of the Society of Vertebrate Paleontology, Mesa, AZ. Journal of Vertebrate Paleontology 25(Suppl. to 3):10A.

            ‡ Daniel, J. and L. M. Witmer. 2005. Heads and skulls as sediment sorters: an actualistic, CT-based study in taphonomy. 65th Annual Meeting of the Society of Vertebrate Paleontology, Mesa, AZ. Journal of Vertebrate Paleontology 25(Suppl. to 3):13A.

            ‡ Hieronymus, T. L. and L. M. Witmer. 2005. Revised horn reconstructions for extinct rhinocerotid taxa: separating the contributions of dermis and epidermis to horn rugosities. 65th Annual Meeting of the Society of Vertebrate Paleontology, Mesa, AZ. Journal of Vertebrate Paleontology 25(Suppl. to 3):29A.

            ‡ Holliday, C. M. and L. M. Witmer. 2005. Anatomical domains within sauropsid heads and their significance for functional interpretation of extinct taxa. Integrative and Comparative Biology 44:570.

2004   ‡  L. M. Witmer, R. C. Ridgely, and S. D. Sampson.  2004.The ear region, cerebral endocast, and cephalic sinuses of the abelisaurid theropod dinosaur Majungatholus. 64th Annual Meeting of the Society of Vertebrate Paleontology, Denver, CO. Journal of Vertebrate Paleontology 24(Suppl. to 3):131A.

            ‡  Ridgely, R. C. and L. M. Witmer.  2004.  New applications of CT scanning and 3D modeling for dinosaur visualization. 64th Annual Meeting of the Society of Vertebrate Paleontology, Denver, CO. Journal of Vertebrate Paleontology 24(Suppl. to 3):103A–104A.

            ‡  Holliday, C. M. and L. M. Witmer.  2004.  Anatomical domains within the heads of archosaurs and their relevance for functional interpretation. 64th Annual Meeting of the Society of Vertebrate Paleontology, Denver, CO. Journal of Vertebrate Paleontology 24(Suppl. to 3):71A.

            ‡  Hieronymus, T. L. and L. M. Witmer.  2004.  Cranial rugosity and dinosaur “horns:” rhino and giraffe as model systems for skin reconstruction in fossil taxa. 64th Annual Meeting of the Society of Vertebrate Paleontology, Denver, CO. Journal of Vertebrate Paleontology 24(Suppl. to 3):70A.

            ‡  L. M. Witmer.  2004.  Invited Plenary Lecture—Fleshing out fossils: the present as the key to a very different past. 7th International Congress of Vertebrate Morphology, Boca Raton, FL. Journal of Morphology 260(3):340.

            ‡  Ridgely, R. C. and L. M. Witmer.  2004.  Beyond imaging: Using 3D-datasets in comparative morphology . 7th International Congress of Vertebrate Morphology, Boca Raton, FL. Journal of Morphology 260(3):321–322.

            ‡  Clifford, A. B. and L. M. Witmer.  2004.  Rules of construction in proboscis building in mammals. 7th International Congress of Vertebrate Morphology, Boca Raton, FL. Journal of Morphology 260(3):283.

            ‡  Hieronymus, T. L. and L. M. Witmer.  2004.  Rhinoceros horn attachment: anatomy and histology of a dermally influenced bone rugosity. 7th International Congress of Vertebrate Morphology, Boca Raton, FL. Journal of Morphology 260(3):298.

            ‡ Witmer, L. M., S. Chatterjee, J. Franzosa, T. Rowe, and R. C. Ridgely. 2004. Neuroanatomy and vestibular apparatus of pterosaurs: Implications for flight, posture, and behavior. Annual Meeting of the Society of Integrative and Comparative Biology, New Orleans, LA. Integrative and Comparative Biology 43(6):832.

            ‡ Hieronymus, T. L. and L. M. Witmer. 2003. Dermal enthesis: anatomy and histology of rhinoceros horn attachment. Annual Meeting of the Society of Integrative and Comparative Biology, New Orleans, LA. Integrative and Comparative Biology 43(6):874.

2003    ‡ Witmer, L. M. 2003. Narial anatomy of ankylosaurian dinosaurs: osteology and soft-tissue reconstruction. 63rd Annual Meeting of the Society of Vertebrate Paleontology, St. Paul, MN. Journal of Vertebrate Paleontology 23(Suppl. to 3):111A–112A.

            ‡ Hieronymus, T. L. and L. M. Witmer. 2003. Rhinoceros horn attachment: anatomy and histology. 63rd Annual Meeting of the Society of Vertebrate Paleontology, St. Paul, MN. Journal of Vertebrate Paleontology 23(Suppl. to 3):61A.

            ‡ Clifford, A. B., and Witmer, L. M.  2003. Nasal structures in moose (Cervidae: Alces). Annual Meeting of the Society of Integrative and Comparative Biology, Toronto, Ontario. Integrative and Comparative Biology 42(6):1209.

            ‡ Holliday, C. M. and L. M. Witmer.  2003. Archosaur jaw muscle homology and evolution: extant data. Annual Meeting of the Society of Integrative and Comparative Biology, Toronto, Ontario. Integrative and Comparative Biology 42(6):1244–1245.

2002    Witmer, L. M., S. Chatterjee, T. Rowe, and J. Franzosa.  2002.  Anatomy of the brain and vestibular apparatus in two pterosaurs: implications for flight, head posture, and behavior. Annual Meeting of the Society of Vertebrate Paleontology, Norman, Oklahoma. Journal of Vertebrate Paleontology 22(Suppl. to 3):120A–121A.

Bimber, O., S. M. Gatesy, and L. M. Witmer.  2002.  Augmented paleontology: merging fossil specimens with computer generated information for analysis and education. Annual Meeting of the Society of Vertebrate Paleontology.  Journal of Vertebrate Paleontology 22(Suppl. to 3):36A.

Holliday, C. M. and L. M. Witmer.  2002.  Functional anatomy of archosaurian jaw musculature: preliminary findings. Annual Meeting of the Society of Vertebrate Paleontology.  Journal of Vertebrate Paleontology 22(Suppl. to 3):66A.

Clifford, A. B. and L. M. Witmer.  2002.  Not all noses are hoses: an appraisal of proboscis evolution in mammals. Annual Meeting of the Society of Vertebrate Paleontology.  Journal of Vertebrate Paleontology 22(Suppl. to 3):45.