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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, [11] of which nearly 90% are frogs. [ 12 ] With the phylogenetic classification, the taxon Labyrinthodontia has been discarded as it is a polyparaphyletic group without unique defining features apart ...
A list of amphibians organizes the class of amphibian by family and subfamilies and mentions the number of species in each of them. The list below largely follows Darrel Frost 's Amphibian Species of the World ( ASW ), Version 5.5 (31 January 2011).
The number of known amphibian species is approximately 8,000, of which nearly 90% are frogs. The smallest amphibian (and vertebrate) in the world is a frog from New Guinea ( Paedophryne amauensis ) with a length of just 7.7 mm (0.30 in).
Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods excluding the amniotes (tetrapods with an amniotic membrane , such as modern reptiles , birds and mammals ).
The number of threatened species has grown by nearly 3% since 1980, as habitat loss, climate change and disease push more animals toward the brink. ... assessing more than 93% of known amphibian ...
Class Estimated number of described species [26] [a] Number of species evaluated for Red List [26] Share of described species evaluated for Red List [26] Threatened species in Red List [26] Best estimate of percent of threatened species [26] Anamniotes lay eggs in water: Amphibians: 8,707 8,020 92% 2,876 41% Amniotes adapted to lay eggs on land ...
Amphibian Species of the World 6.2: An Online Reference (ASW) is a herpetology database. It lists the names of frogs, salamanders and other amphibians , which scientists first described each species and what year, and the animal's known range.
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 ...