Protarctos is an extinct genus of basal ursine bear that lived in North America and Eurasia during the Pliocene and into Early Pleistocene.
GENUS
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Protarctos is an extinct genus of basal ursine bear that lived in North America and Eurasia during the Pliocene and into Early Pleistocene.
==Description== Species of Protarctos were closer in size to the American black bear (Ursus americanus) and the Asian black bear (U. thibetanus). They differ from other ursines in the primitive nature of their dental morphology.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).