Diadectidae

Rarity: Common

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At a glance

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What Wikipedia says

Diadectidae is an extinct family of early tetrapods that lived in what is now North America and Europe during the Late Carboniferous and Early Permian, and in Asia during the Late Permian. They were the first herbivorous tetrapods, and also the first fully terrestrial animals to attain large sizes.

Excerpt from the Wikipedia article “Diadectidae”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ghedoghedo, Public domain, via Wikimedia Commons.