# toothless mammal with keratin scales

Abstracts » The Journal of Morphology publishes research in cytology, protozoology, embryology, and general animal morphology in vertebrates and invertebrates. Onlinelibrary.wiley.com

Evo-Devo of feathers and scales: building complex epithelial appendages » This animal had both down and flight feathers. The well-developed asymmetric flight feathers and toothless beak suggests that it flew well. The fossils even … Ncbi.nlm.nih.gov

300 Entertaining and Random Animal Facts » The ultimate compilation of animal facts that will amaze you! Here are 300 of the most entertaining and random facts about the animal kingdom Africafactszone.com

A review and reappraisal of the specific gravities of present and past multicellular organisms, with an emphasis on tetrapods » The density, or specific gravity (SG), of organisms has numerous important implications for their form, function, ecology, and other facets of beings living and dead, and it is especially necessary t… Anatomypubs.onlinelibrary.wiley.com