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The numbers of species cited above follows Frost and the total number of known (living) amphibian species as of March 31, 2019, is exactly 8,000, [12] of which nearly 90% are frogs. [ 13 ] With the phylogenetic classification, the taxon Labyrinthodontia has been discarded as it is a polyparaphyletic group without unique defining features apart ...
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.
A Checklist of North American Amphibians and Reptiles: The United States and Canada. Vol. 1 - Amphibians. Xlibris Corporation LLC. ISBN 978-1-4931-7035-7. [self-published source] Cope, Edward D. (1875). Check-list of North American Batrachia and Reptilia; with a systematic list of the higher groups, and an essay on geographical distribution.
This breed of amphibian has two pairs of webbed feet, which allows it to have a bit of hang time. It can even adjust mid-flight and change directions. #4 In High Temperatures, Nectar Ferments ...
[5] [6] Beyond 55 leg pairs, examples are listed only if they represent especially significant maximum numbers (e.g., most legs in the animal kingdom) or exhibit relatively little intraspecific variation in leg number. This list draws examples from three broad groups of animals: tetrapods (with 0 to 2 leg pairs, [7] [8] providing three examples ...
Eocaecilia, an Early Jurassic amphibian commonly considered one of the oldest (stem-group) caecilians. Little is known of the evolutionary history of the caecilians, which have left a very sparse fossil record. The first fossil, a vertebra dated to the Paleocene, was not discovered until 1972. [44]
As of September 2021, the International Union for Conservation of Nature (IUCN) lists 3160 least concern amphibian species. [1] 38% of all evaluated amphibian species are listed as least concern. No subpopulations of amphibians have been evaluated by the IUCN. This is a complete list of least concern amphibian species as evaluated by the IUCN.
The African clawed frog (Xenopus laevis), also known as simply xenopus, African clawed toad, African claw-toed frog or the platanna) is a species of African aquatic frog of the family Pipidae. Its name is derived from the short black claws on its feet. The word Xenopus means 'strange foot' and laevis means 'smooth'.