A new Deseadan sloth (Mammalia: Xenarthra) from Salla, Bolivia, and its implications for the primitive condition of the dentition in edentates

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Abstract
Pseudoglyptodon sallaensis, new genus and species, represented by a partial mandible from the Deseadan Salla Beds of Bolivia, is a sloth of uncertain affinities. The trilobate cross-sectional pattern of the cheek teeth resembles that of glyptodonts. This similarity to glyptodonts may be convergent, but is quite possibly the result of retention in both sloths and glyptodonts of a primitive feature of the Xenarthra. Complex and well-developed teeth should be regarded as the likely condition of the primitive dentition in the Xenarthra.