The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it would take well into the middle of the period for life to recover its former diversity. Therapsids andarchosaurs were the chief terrestrial vertebrates during this time. A specialized subgroup of archosaursdinosaurs, first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic.

Pages in category "Triassic Animals"

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