Lawrence Witmer

Lawrence M. Witmer (born October 10, 1959, at Rochester, New York) is an American paleontologist and paleobiologist. He is a Professor of Anatomy and a Chang Ying-Chien Professor of Paleontology at the Department of Biomedical Sciences at the Heritage College of Osteopathic Medicine in Ohio University. Witmer is considered to be one of the world's foremost experts on soft-tissue anatomy of the skull in extinct animals such as dinosaurs and pterosaurs. One of Witmer's largest contributions to vertebrate paleontology was the creation of the Extant Phylogenetic Bracket approach to ancestral character state reconstruction. This methodology incorporates extensive comparative anatomy using physical and digital dissections of extant (not extinct) animals.

He appeared in TV shows such as the Triumph of the Beasts featurette for ''Walking with Beasts'', ''Jurassic Fight Club'' (History Channel, 2008), ''Clash of the Dinosaurs'' (Discovery Channel, 2009), and ''Bizarre Dinosaurs'' (National Geographic Channel, 2009), among others.

Book

[https://books.google.com/books?id=UHxnHQAACAAJ The Search for the Origin of Birds] (1995) Provided by Wikipedia
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  1. 1
    Intraspecific variation and symmetry of the inner-ear labyrinth in a population of wild turkeys: implications for paleontological reconstructions

    Intraspecific variation and symmetry of the inner-ear labyrinth in a population of wild turkeys: implications for paleontological reconstructions by Donald G. Cerio, Lawrence M. Witmer

    Published 2019-07-01
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  2. 2
    Vascular Patterns in Iguanas and Other Squamates: Blood Vessels and Sites of Thermal Exchange.

    Vascular Patterns in Iguanas and Other Squamates: Blood Vessels and Sites of Thermal Exchange. by William Ruger Porter, Lawrence M Witmer

    Published 2015-01-01
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  3. 3
    Ontogeny of the Middle-Ear Air-Sinus System in Alligator mississippiensis (Archosauria: Crocodylia).

    Ontogeny of the Middle-Ear Air-Sinus System in Alligator mississippiensis (Archosauria: Crocodylia). by David L Dufeau, Lawrence M Witmer

    Published 2015-01-01
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  4. 4
    Convoluted nasal passages function as efficient heat exchangers in ankylosaurs (Dinosauria: Ornithischia: Thyreophora).

    Convoluted nasal passages function as efficient heat exchangers in ankylosaurs (Dinosauria: Ornithischia: Thyreophora). by Jason M Bourke, Wm Ruger Porter, Lawrence M Witmer

    Published 2018-01-01
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  5. 5
    Beyond Endocasts: Using Predicted Brain-Structure Volumes of Extinct Birds to Assess Neuroanatomical and Behavioral Inferences

    Beyond Endocasts: Using Predicted Brain-Structure Volumes of Extinct Birds to Assess Neuroanatomical and Behavioral Inferences by Catherine M. Early, Ryan C. Ridgely, Lawrence M. Witmer

    Published 2020-01-01
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  6. 6
    Digital preparation and osteology of the skull of Lesothosaurus diagnosticus (Ornithischia: Dinosauria)

    Digital preparation and osteology of the skull of Lesothosaurus diagnosticus (Ornithischia: Dinosauria) by Laura B. Porro, Lawrence M. Witmer, Paul M. Barrett

    Published 2015-12-01
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  7. 7
    Ontogeny of a sexually selected structure in an extant archosaur Gavialis gangeticus (Pseudosuchia: Crocodylia) with implications for sexual dimorphism in dinosaurs

    Ontogeny of a sexually selected structure in an extant archosaur Gavialis gangeticus (Pseudosuchia: Crocodylia) with implications for sexual dimorphism in dinosaurs by David Hone, Jordan C. Mallon, Patrick Hennessey, Lawrence M. Witmer

    Published 2020-05-01
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  8. 8
    Cartilaginous epiphyses in extant archosaurs and their implications for reconstructing limb function in dinosaurs.

    Cartilaginous epiphyses in extant archosaurs and their implications for reconstructing limb function in dinosaurs. by Casey M Holliday, Ryan C Ridgely, Jayc C Sedlmayr, Lawrence M Witmer

    Published 2010-09-01
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  9. 9
    The braincase of the basal sauropod dinosaur Spinophorosaurus and 3D reconstructions of the cranial endocast and inner ear.

    The braincase of the basal sauropod dinosaur Spinophorosaurus and 3D reconstructions of the cranial endocast and inner ear. by Fabien Knoll, Lawrence M Witmer, Francisco Ortega, Ryan C Ridgely, Daniela Schwarz-Wings

    Published 2012-01-01
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  10. 10
    Mechanical analysis of feeding behavior in the extinct "terror bird" Andalgalornis steulleti (Gruiformes: Phorusrhacidae).

    Mechanical analysis of feeding behavior in the extinct "terror bird" Andalgalornis steulleti (Gruiformes: Phorusrhacidae). by Federico J Degrange, Claudia P Tambussi, Karen Moreno, Lawrence M Witmer, Stephen Wroe

    Published 2010-08-01
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  11. 11
    The endocranial anatomy of therizinosauria and its implications for sensory and cognitive function.

    The endocranial anatomy of therizinosauria and its implications for sensory and cognitive function. by Stephan Lautenschlager, Emily J Rayfield, Perle Altangerel, Lindsay E Zanno, Lawrence M Witmer

    Published 2012-01-01
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  12. 12
    A New Titanosaurian Braincase from the Cretaceous "Lo Hueco" Locality in Spain Sheds Light on Neuroanatomical Evolution within Titanosauria.

    A New Titanosaurian Braincase from the Cretaceous "Lo Hueco" Locality in Spain Sheds Light on Neuroanatomical Evolution within Titanosauria. by Fabien Knoll, Lawrence M Witmer, Ryan C Ridgely, Francisco Ortega, Jose Luis Sanz

    Published 2015-01-01
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  13. 13
    Neurocranial osteology and neuroanatomy of a late Cretaceous titanosaurian sauropod from Spain (Ampelosaurus sp.).

    Neurocranial osteology and neuroanatomy of a late Cretaceous titanosaurian sauropod from Spain (Ampelosaurus sp.). by Fabien Knoll, Ryan C Ridgely, Francisco Ortega, Jose Luis Sanz, Lawrence M Witmer

    Published 2013-01-01
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  14. 14
    A comparison of postnatal arterial patterns in a growth series of giraffe (Artiodactyla: Giraffa camelopardalis)

    A comparison of postnatal arterial patterns in a growth series of giraffe (Artiodactyla: Giraffa camelopardalis) by Haley D. O’Brien, Paul M. Gignac, Tobin L. Hieronymus, Lawrence M. Witmer

    Published 2016-02-01
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  15. 15
    The first occurrence of an avian-style respiratory infection in a non-avian dinosaur

    The first occurrence of an avian-style respiratory infection in a non-avian dinosaur by D. Cary Woodruff, Ewan D. S. Wolff, Mathew J. Wedel, Sophie Dennison, Lawrence M. Witmer

    Published 2022-02-01
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  16. 16
    Cranial osteology of the ankylosaurian dinosaur formerly known as Minmi sp. (Ornithischia: Thyreophora) from the Lower Cretaceous Allaru Mudstone of Richmond, Queensland, Australia

    Cranial osteology of the ankylosaurian dinosaur formerly known as Minmi sp. (Ornithischia: Thyreophora) from the Lower Cretaceous Allaru Mudstone of Richmond, Queensland, Australia by Lucy G. Leahey, Ralph E. Molnar, Kenneth Carpenter, Lawrence M. Witmer, Steven W. Salisbury

    Published 2015-12-01
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  17. 17
    Avialan-like brain morphology in Sinovenator (Troodontidae, Theropoda)

    Avialan-like brain morphology in Sinovenator (Troodontidae, Theropoda) by Congyu Yu, Akinobu Watanabe, Zichuan Qin, J. Logan King, Lawrence M. Witmer, Qingyu Ma, Xing Xu

    Published 2024-02-01
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  18. 18
    Structural extremes in a cretaceous dinosaur.

    Structural extremes in a cretaceous dinosaur. by Paul C Sereno, Jeffrey A Wilson, Lawrence M Witmer, John A Whitlock, Abdoulaye Maga, Oumarou Ide, Timothy A Rowe

    Published 2007-11-01
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  19. 19
    Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs

    Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs by Mark T. Young, Charlotte I. W. Bowman, Arthur Erb, Julia A. Schwab, Lawrence M. Witmer, Yanina Herrera, Stephen L. Brusatte

    Published 2023-05-01
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  20. 20
    ‘Ear stones’ in crocodylians: a cross-species comparative and ontogenetic survey of otolith structures

    ‘Ear stones’ in crocodylians: a cross-species comparative and ontogenetic survey of otolith structures by Julia A. Schwab, Mark T. Young, Stig A. Walsh, Lawrence M. Witmer, Yanina Herrera, Zena L. Timmons, Ian B. Butler, Stephen L. Brusatte

    Published 2022-03-01
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