2021年8月24日 · Anura is a Greek word that roughly translates to “without a tail” because frogs and toads took a distinctive evolutionary turn away from other amphibians when tails were no longer beneficial to their survival.

frog and toad, (order Anura), amphibians belonging to the order Anura, which, because of their wide distribution, are known by most people around the world. The name frog is commonly applied to those forms with long legs and smooth mucus -covered skins, while toad is used for a variety of robust short-legged forms, especially those with rough ...

A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura [1] (coming from the Ancient Greek ἀνούρα, literally 'without tail').

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Anu­rans rep­re­sent, by far, the most spe­ciose, di­verse, and wide­spread of the three ex­tant am­phib­ian or­ders. They are found through­out most of the world, ex­cept in polar re­gions, and some oceanic is­lands and ex­tremely xeric deserts. Anu­ran di­ver­sity is great­est in the trop­ics.

The order Anura includes the frogs and toads. They are one of the most successful living amphibia, judged by number of species. There are about 7400 different species of amphibians, and about 6500 are in the Anura. [1] [2] There is no …

Anurans are unique among amphibians and all other vertebrates in having a broad head, large mouth, large protuberant eyes, short body, and no tail. The hind limbs are long and modified for jumping by having an extra segment composed of elongated "ankle" bones—fibulare and tibiale (astragalus and calcaneum, respectively).

Anura Ford and Cannatella, 1993, Herpetol. Monogr., 7 : 99. Group of frogs defined as the last common ancestor of living frogs and all of the descendants of that species.

Anura is an order of animals in the class Amphibia that includes frogs and toads. More than 5,000 species are described in the order. The living anurans are typically divided into three suborders: Archaeobatrachia, Mesobatrachia, and Neobatrachia.

The breeding behaviour is one of the most distinctive attributes of the Anura. Because the eggs can develop only under moist conditions, most frogs place their eggs in bodies of fresh water. Many species congregate in large numbers at temporary pools for short breeding seasons.