# toothless mammal with keratin scales

Loss of teeth and enamel in tetrapods: fossil record, genetic data and morphological adaptations » Since their recruitment in the oral cavity, approximately 450 million years ago, teeth have been subjected to strong selective constraints due to the crucial role that they play in species survival. It is therefore quite surprising that the ability to… Ncbi.nlm.nih.gov

(PDF) Tetrapod Teeth: Diversity, Evolution, and Function » PDF | Teeth provide an excellent model system for understanding evolutionary change and how it has led to adaptive diversity across tetrapods. Their…| Find, read and cite all the research you need on ResearchGate Researchgate.net

Feeding in Marine Mammals » Feeding in marine mammals: An integration of evolution and ecology through time Palaeo-electronica.org

Introduction » Marine vertebrates include fish, amphibians, reptiles, birds, and mammals. The Part I describes the classification of marine vertebrates. Included is information about the broad diversity seen in specific biological materials. These materials include mineralized… Link.springer.com

A review and reappraisal of the specific gravities of present and past multicellular organisms, with an emphasis on tetrapods » <em>The Anatomical Record</em> is an anatomy journal publishing new discoveries in the morphological aspects of molecular, cellular, developmental, evolutionary, and systems biology. Anatomypubs.onlinelibrary.wiley.com