Non-Primate Interlude: Echolocation in a Primitive Ungulate?



Let us take leave of our fine Order for a post and look across the tree at some intriguing new (-ish) research on the primitive stem ungulate Hyopsodus. The paper, “Digital cranial endocast of Hyopsodus (Mammalia, “Condylarthra”): A case of Paleogene terrestrial echolocation?” appeared in 2012 in PLOS One, and describes new CT scans of a well preserved Hyopsodus lepidus cranium, AMNH 143783, with a fairly complete reconstruction of the endocranium that can be compared to known endocrania of other early ungulates.

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