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Professor & DepartmentÌýChair

Expertise:ÌýSystematic Herpetology, Skeletal Morphology, and Evolutionary Development, and Anatomy

Research Interests

My research focuses on aspects of skeletal development in reptiles, amphibians, particularly in the context of element homology and. In my lab we study skeletal development to understand how the skeleton evolved such amazing diversity through changes in timing and development. ÌýGraduate and undergraduate students in my lab have worked on projects that include geometric morphometric analyses of shape change in the skeletons of amphibians, descriptive morphology of embryonic turtles, and heterochrony, in skeletal development across all Amniota.Ìý I am actively recruiting students to work in my laboratory.

Recent Courses

BL 155/160 – Principles of Biology II BL 350/350L – Vertebrate Anatomy BL 405 – Scientific Illustration BL 415 – Introduction to Systematic Biology BL 426/426L – Biology of the Reptilia

Selected Publications

2020ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýSheil CA,Ìýand Welton LJ. A method for removing eggs or embryos from preserved, gravid snakes that minimizes damage to museum specimens. Herpetological Review. 51(2):237–41.

2018ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý Kilgore C, Johansen JR, Mai T, Hauer T, Casamatta DA, andÌýSheil CA.ÌýMolecular characterization ofÌýGeitleria appalachianaÌýsp. nov. 2 (Nostocales, Cyanobacteria) and formation of Geitleriaceae fam. 3 nov. 4. Fottea. 18(2):150–163.

2017ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý*Shalygin S, Shalygina R, Johansen JR, Pietrasiak N, Berrendero Gómez E, Bohunická M, Mares J, andÌýSheil CA.ÌýÌý°ä²â²¹²Ô´Ç³¾²¹°ù²µ²¹°ù¾±³Ù²¹Ìýgen. nov. (Nostocales, Cyanobacteria): Convergent evolution resulting in a cryptic genus. Journal of Phycology. 53(4):762–777.

2017ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌý Danielson S, andÌýSheil CA.Ìý Patters of chondrification and ossification in the skull ofÌýGraptemys pseudogeographica,Ìýthe False Map Turtle (Emydidae). Journal of Morphology. 278:1739–51.

2014ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýŘeháková K, JohansenÌýJR, Bowen MB, Martin MP, andÌýSheil CA.ÌýVariation in secondary structure of the 16S rRNA molecule in Cyanobacteria with implications for phylogenetic analysis.ÌýFotteaÌý14:161–178.

2014ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýSheil CA, **Jorgensen M, **Tulenko F, and **Harrington S.ÌýIntraspecific variation in timing of ossification affects inferred heterochrony of cranial bones in Amphibia.ÌýEvolution & Development 16(5):292–305.

2014ÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýÌýSheil CA,Ìýand *Zaharewicz K.Ìý Anatomy of the fully formed chondrocranium ofÌýPodocnemis unifilisÌý(Pleurodira: Podocnemididae).ÌýActa Zoologica 95:358–366.

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