Dimetrodon

Rarity: Rare

A topic known well beyond its field, found in many languages.

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At a glance

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Nature

Knowledge cost

6

Influence

12

Resistance

9

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What Wikipedia says

Dimetrodon ( or ; lit. 'two measures of teeth') is an extinct genus of sphenacodontid synapsid that lived during the Cisuralian to early Guadalupian epoch of the Permian period, around 294.1–271 million years ago.

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

Image: D'Arcy Norman from Calgary, Canada, CC BY 2.0, via Wikimedia Commons.