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The list below largely follows Darrel Frost's Amphibian Species of the World (ASW), Version 5.5 (31 January 2011). Another classification, which largely follows Frost, but deviates from it in part is the one of AmphibiaWeb , which is run by the California Academy of Sciences and several of universities.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
In 2004, the International Union for Conservation of Nature (IUCN) reported stating that currently birds, [172] mammals, and amphibians extinction rates were at minimum 48 times greater than natural extinction rates—possibly 1,024 times higher. In 2006, there were believed to be 4,035 species of amphibians that depended on water at some stage ...
This is a list of amphibians found in the United States. A total of 306 amphibian species have been recorded in the United States , [ 1 ] 2 of which are now extinct. [ 2 ] This list is derived from the database listing of Amphibian Species of the World .
This is a checklist of amphibians found in Northern America, based mainly on publications by the Society for the Study of Amphibians and Reptiles. [1] [2] [3] The information about range and status of almost all of these species can be found also for example in the IUCN Red List of Threatened Species site. [4]
Pages in category "Lists of amphibians" The following 12 pages are in this category, out of 12 total. ... List of Pristimantis species; R. List of recently extinct ...
The scientists warned that while threatened amphibians, birds, mammals and reptiles found mainly on land often occupy the same areas, freshwater species face different threats, while factors such ...
For IUCN lists of critically endangered species by kingdom, see: Animals (kingdom Animalia) — IUCN Red List critically endangered species (Animalia) Amphibians — List of critically endangered amphibians; Birds — List of critically endangered birds; Fish — List of critically endangered fishes