otodusmegalodon
The Otodus Shark Lineage: Megalodon and Its Ancestors
A curator-led guide to the megatooth (Otodus) shark lineage and how to tell the species apart by their teeth. Walk the sequence from Otodus obliquus through auriculatus, angustidens, and chubutensis to megalodon as the lateral cusplets shrink and vanish, the serrations refine, and the crown broadens into a cutting blade. Includes the honest Carcharocles-vs-Otodus naming history, why megalodon was not the great white's ancestor, and South Carolina's role as Oligocene angustidens country.
Jun 29, 2026