CT scan view of the tip of bluntnose six-gill shark (or cow shark) tooth (blue) found embedded in the extinct right whale skull. Scale bar = 1 mm). Illustration by Olivier Lambert (RBINS).
In a drawer at Chicago’s Field Museum of Natural History, scientists found what amounts to a frozen moment of ancient violence. A neck vertebra from a long-necked marine reptile held a broken tooth ...
Teeth first evolved as sensory tissue in the armored exoskeletons of ancient fish, fossil scans find
CT scan of the front of a skate, showing the hard, tooth-like denticles on its skin (shown in orange). Credit: Yara Haridy CT scan of the front of a skate, showing the hard, tooth-like denticles on ...
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