Thin-section from South African Lystrosaurus tusk (IMAGE)

University of Washington

Thin-section from South African Lystrosaurus tusk

Caption

In this image of the thin-section of a fossilized tusk from a South African Lystrosaurus, black arrowheads show layers of dentine deposited in layers of growth, with no signs of a hibernation-like state. Scale bar is 0.1 millimeters.

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Megan Whitney/Christian Sidor

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