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Reptile species (IUCN, 2016-2) 5130 extant species have been evaluated; 4220 of those are fully assessed [a] 3229 are not threatened at present [b] 989 to 1899 are threatened [c] 26 to 43 are extinct or extinct in the wild: 24 extinct (EX) species [d] 2 extinct in the wild (EW) 17 possibly extinct [CR(PE)] 0 possibly extinct in the wild [CR(PEW)]
Additionally 910 reptile species (18% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. [ 2 ]
Crocodilians are unusual among reptiles in the amount of parental care provided after the young hatch. [136] [48] The mother helps excavate hatchlings from the nest and carries them to water in her mouth. Newly hatched crocodilians gather together and follow their mother. [137]
Fossils have revealed an ancient marine reptile with a loosely connected jaw that allowed its throat to balloon out to a massive size so it could filter feed the way right whales do today.
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 .
Calm, docile, and unique to look at, there’s a lot to love about a Frilled Dragon. These medium-to-large reptiles come with a frill around their neck that they can puff up to scare predators away.
Parareptilia ("near-reptiles") is an extinct subclass or clade of basal sauropsids/reptiles, typically considered the sister taxon to Eureptilia (the group that likely contains all living reptiles and birds).
The IUCN also lists 12 reptile subspecies as critically endangered. Of the subpopulations of reptiles evaluated by the IUCN, ten species subpopulations have been assessed as critically endangered. Additionally 910 reptile species (18% of those evaluated) are listed as data deficient , meaning there is not sufficient information for a full ...