Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil.

Researchers examined the internal tooth structure of a Late Jurassic shark species using microscopy and found it had a pseudoosteodont pattern with compact enameloid, despite having advanced cutting-tooth morphology, suggesting it may have been a dietary generalist.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.