Astrapsis tubules (IMAGE)

University of Chicago

Astrapsis tubules

Caption

CT scan of the tooth-like-odontode structure from Astrapsis, an ancient jawless vertebrate fish. The tubules (shown in green) are filled with dentine, the same material that makes up the sensitive inner layer of modern teeth. In red is the vascular system which would have housed the nerves in life allowing for sensation to be transmitted.

Credit

Yara Haridy

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