Vertebrate Functional Morphology & Evolution


Casey M. Holliday

Assistant Professor

Program in Integrative Anatomy

Mailing Address:

M263 Medical Sciences Building

Dept. of Pathology and Anatomical Sciences

University of Missouri School of Medicine

Columbia, MO 65212

ph: 573-884-6599


Google citation index

Research Interests

HollidayLab Wordpress Blog

Medical Education

Curriculum Vitae


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Links to collaborators, colleagues, funding sources, and other sites of interest.


MU Integrative Anatomy


Deep Scaly



Rockefeller State Refuge

Phil Allman and Hlami





Holliday Lab NEWS


January 2012: Meet ShieldCroc! A New Cretaceous Crocodyliform Species (Aegisuchus witmeri) with a very interesting skull roof is described.

Holliday CM, Gardner NM. 2012. A New Eusuchian Crocodyliform with Novel Cranial Integument and Its Significance for the Origin and Evolution of Crocodylia. PLoS One. 7(1). 13pp.

Read the Press Release Here

Visit the Holliday Lab page Here

November 2011: PCB (common pollutants) exposure leads to decreased bone density in  Diamondback Terrapins

Holliday, D. K., C. M. Holliday. In Press. The effects of the organopollutant PCB 126 on bone density in juvenile diamonback terrapins. Aquatic Toxicology. doi:10.1016/j.aquatox.2011.09.015

Read the Press Release Here


November 2011: SVP 2011 Education and Outreach Poster

Alligators Near and Far

September 2011: New paper on the ontogeny of a sesamoid in the jaw muscles of Alligators

Tsai, H. P., C. M. Holliday. 2011. Ontogeny of the Alligator Cartilago Transiliens and Its Significance for Sauropsid Jaw Muscle Evolution. PLoS One 6(9):e24935.

Read more at the blog here

July 2011: Airway Anatomy

Holliday Lab and HHMI Maps in Medicine Program hosted a Lung and Airway Anatomy Workshop for Missouri High School students. Read more at the blog here.

May 2011: 2 new papers out recently on modeling Alligator jaws:

Porro, L. B., C. F. Ross, C. M. Holliday, F. Anapol, L. C. Ontiveros, L. T. Ontiveros. 2011. Free body analysis, beam mechanics, and finite element modeling of the mandible of Alligator mississippiensis. Journal of Morphology 272: 910-937.

Reed, D. A., L. Porro, J. Iriarte-Diaz, J. Lemberg, C. M. Holliday, F. Anapol, C. F. Ross. 2011. The impact of bone and suture material properties on mandibular function in Alligator mississippiensis: testing theoretical phenotypes with finite element analysis. Journal of Anatomy. 318(1):59-74.

April 2011: New online database launched: 3D Alligator

Along with Witmerlab, we've launched a large, 3D interactive atlas of Alligator Head Anatomy. Check it out!

March 2011: New paper out on the cranial joints of Geckos

Samantha L. Payne, Casey M. Holliday, and Matthew K. Vickaryous. 2011. An Osteological and Histological Investigation of Cranial Joints in Geckos. The Anatomical Record 294: 399-405.

Nov 2010: New paper out on the skull of the Permian Reptile Youngina


Gardner NM, Holliday, CM, and O'Keefe FR. The braincase of Youngina capensis (Reptilia, Diapsida): new insights from high-resolution CT scanning of the holotype. Paleontologia Electronica 13(3): 16p.

October 2010: New paper out on Dinosaur Articular Cartilage

Holliday CM, Ridgely RC, Seldmayr JC, & Witmer LM. Cartilaginous Epiphyses in Extant Archosaurs and Their Implications for Reconstructing Limb Function in Dinosaurs. PLOS ONE 5(9): 15p. e13120. doi:10.1371/journal.pone.0013120

Project Page is here

Paper is here

Summer 2010: Parts of the Holliday Lab website migrating to Wordpress:

We've started a page at Wordpress where we'll maintain updates, research news, and a few editorials in a shorter format. This Mizzou-hosted page will serve as the foundation for the Wordpress page as well as host our project pages, 3D viz, and other available data. See you there!


Spring 2010: New paper out on Lizard Symphysis Microanatomy

Holliday CM, Gardner NM, Paesani SM, Douthitt M & Ratliff JL. 2010. Microanatomy of the mandibular symphysis in lizards: patterns in fiber orientation and Meckel's cartilage and their significance in cranial evolution. The Anatomical Record 293:1350-1359

Project Page is here

Spring 2010: Research  Trip to the Royal Veterinary College and Munich February 2010

Casey conducted a trip to London and Munich to dissect rare crocodile heads and study fossil reptile skulls as part of several ongoing projects in crocodilian cranial evolution.

Crocodilian Braincase and Palate Evolution

New paper out in the Journal of Vertebrate Paleontology

Casey Holliday & Lawrence Witmer. 2009. The epipterygoid of crocodyliforms and its significance for the evolution of the orbitotemporal region of eusuchians. Journal of Vertebrate Paleontology 29(3):715-733.

Dinosaur Jaw Muscles

New paper out in The Anatomical Record Special  Issue on Dinosaur Anatomy

Holliday, CM. 2009. New Insights into the Dinosaur Jaw Muscle Anatomy. The Anatomical Record. 292:1246-1265

Lab featured in USA TODAY

 1940 Vertebrate Anatomy Exams discovered in copy of A. S. Romer. Man and the Vertebrates 1937. 

Funny how the same questions are still asked. But the answers change...sometimes. Way cool.

Article Here

File download here




March 2009: New Undergrad-built Online 3D Database Launched

Link to Page

Also Featured in the Marshall student paper The Parthenon

Link to Page