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A dragonfly in its final moult, undergoing metamorphosis, it begins transforming from its nymph form to an adult. Metamorphosis is a biological process by which an animal physically develops including birth transformation or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. [1]
Center for North American Herpetology over 500 species of reptiles and amphibians; European Field Herping Community; New Zealand Herpetology Archived 2007-10-20 at the Wayback Machine; Chicago Herpetological Society; Biology of the Reptilia is an online copy of the full text of a 22-volume 13,000-page summary of the state of research of reptiles.
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders , historically combined with that of modern amphibians , is called herpetology .
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This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. Group of animals including lepidosaurs, testudines, and archosaurs This article is about the animal class. For other uses, see Reptile (disambiguation). Reptiles Temporal range: Late Carboniferous–Present Pre๊ ๊ O S D C P T J K Pg N Tuatara Saltwater crocodile Common box turtle ...
Sauria lies within the larger total group Sauropsida, which also contains various stem-reptiles which are more closely related to reptiles than to mammals. [3] Prior to its modern usage, "Sauria" was used as a name for the suborder occupied by lizards , which before 1800 were considered crocodilians.
The name of a clade is conventionally a plural, where the singular refers to each member individually. A unique exception is the reptile clade Dracohors, which was made by haplology from Latin "draco" and "cohors", i.e. "the dragon cohort"; its form with a suffix added should be e.g. "dracohortian".
Unlike Benton, for example, Jacques Gauthier and colleagues forwarded a definition of Amniota in 1988 as "the most recent common ancestor of extant mammals and reptiles, and all its descendants". [26] As Gauthier makes use of a crown group definition, Amniota has a slightly different content than the biological amniotes as defined by an ...