Anura
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Frogs are a diverse and largely carnivorous group of short-bodied, tailless amphibians. The oldest fossil "proto-frog" appeared in the early Triassic of Madagascar, but molecular clock dating suggests their origins may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is found in tropical rainforests. There are approximately 4,800 recorded species, accounting for over 85% of extant amphibian species. They are also one of the five most diverse vertebrate orders.
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African bullfrog | Australian ground frogs | Common horned frogs | Common rain frog |
Common spadefoot | Darwin's frog | Fire-bellied toads | Goliath frog |
Hairy frog | Long-nosed horned frog | Mantellid frogs | Mexican burrowing toad |
mutable rainfrog | Narrow-mouthed frogs | Pacific giant glass frog | Poison dart frogs |
sedge and bush frogs | Shrub frogs | Solomon Island leaf frog | Sumaco horned treefrog |
Tongueless frogs | True frogs | True toads | True tree frogs |