Cross section of a Massospondylus carinatus thigh bone, showing the growth rings, similar to those of a tree (IMAGE)

University of the Witwatersrand

Cross section of a Massospondylus carinatus thigh bone, showing the growth rings, similar to those of a tree

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Cross section of a Massospondylus carinatus thigh bone, showing the growth rings, similar to those of a tree

Credit

Kimi Chapelle

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