are dinosaurs reptiles
Archosaurs developed into the well-known dinosaurs and pterosaurs, as well as the ancestors of crocodiles. Since reptiles, first rauisuchians and then dinosaurs, dominated the Mesozoic era, the interval is popularly known as the Age of Reptiles. As amniotes, reptile eggs are surrounded by membranes for protection and transport, which adapt them to reproduction on dry land. Many of the viviparous species feed their fetuses through various forms of placenta analogous to those of mammals, with some providing initial care for their hatchlings. Reptiles are a group (Reptilia) of tetrapod animals comprising today's turtles, crocodilians, snakes, lizards, tuatara, and their extinct relatives. The study of these traditional reptile groups, historically combined with that of modern amphibians, is called herpetology. Physiology of dinosaurs-Wikipedia, the free encyclopedia. Dinosaur Physiology-The Crazy Debate. New evidence for warm-blooded dinosaurs-Science Daily. Dinosaurs were warm-blooded reptiles: Mammal bone study sheds ... And that suggests that crocs lack not only the power but also the endurance of warm-blooded mammals. Dinosaurs dominated over mammals in terrestrial ecosystems throughout the Mesozoic, Seymour said in the statement. The ornithischian dinosaurs were all plant-eaters, but the saurischian dinosaurs included plant-eaters and meat-eaters. Other reptiles that lived at this time, but were not actually dinosaurs, included flying reptiles called PTEROSAURS, and marine reptiles such as ICHTHYOSAURS and plesiosaurs. PTEROSAURS. ICHTHYOSAURS. FIND OUT MORE. This group of land-living reptiles appeared around 230 million years ago. Like reptiles today, dinosaurs had a scaly, waterproof skin, and young that hatched from eggs. For 165 million years, a period called the Mesozoic era, they dominated life on Earth. To do that they must have had more muscular power and greater endurance than a crocodile-like physiology would have allowed.. It's not the only recent study to suggest that dinosaurs weren't the slow-moving, cold-blooded creatures many scientists once believed them to be. Because some reptiles are more closely related to birds than they are to other reptiles (crocodiles are more closely related to birds than they are to lizards), many modern scientists prefer to make Reptilia a monophyletic grouping and so also include the birds, which today contain over 10,000 species. Call it the latest salvo in the not-so-heated debate over whether dinosaurs were hot-or cold-blooded. A new paper published in the journal PLoS One argues that dinos must have been warm-blooded like birds and mammals--and not cold-blooded like reptiles, as many scientists believed in years past.
Yes