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A review of the osteoderms of lizards (Reptilia: Squamata) by Catherine Williams; Alexander Kirby; Arsalan Marghoub; Loïc Kéver; Sonya Ostashevskaya‐Gohstand; Sergio Bertazzo; Mehran Moazen; Arkhat Abzhanov; Anthony Herrel; Susan E. Evans; Matt Vickaryous is a Environmental Science article available to read on EtoBox.

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## ABSTRACT Osteoderms are mineralised structures consisting mainly of calcium phosphate and collagen. They form directly within the skin, with or without physical contact with the skeleton. Osteoderms, in some form, may be primitive for tetrapods as a whole, and are found in representatives of most major living lineages including turtles, crocodilians, lizards, armadillos, and some frogs, as well as extinct taxa ranging from early tetrapods to dinosaurs. However, their distribution in time and space raises questions about their evolution and homology in individual groups. Among lizards and their relatives, osteoderms may be completely absent; present only on the head or dorsum; or present all over the body in one of several arrangements, including non‐overlapping mineralised clusters, a continuous covering of overlapping plates, or as spicular mineralisations that thicken with age. This diversity makes lizards an excellent focal group in which to study osteoderm structure, function, development and evolution. In the past, the focus of researchers was primarily on the histological structure and/or the gross anatomy of individual osteoderms in a limited sample of taxa. Those studies

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Author

Catherine Williams; Alexander Kirby; Arsalan Marghoub; Loïc Kéver; Sonya Ostashevskaya‐Gohstand; Sergio Bertazzo; Mehran Moazen; Arkhat Abzhanov; Anthony Herrel; Susan E. Evans; Matt Vickaryous

Publisher

Wiley

Published

2021

Language

EN

Field

Environmental Science (Life Sciences)