An illustration from Steno’s 1667 paper comparing teeth from a dissected shark head to a fossilized tooth. Nicholas Steno Fossil vertebrae that look like gigantic ashtrays gave scientists the fi ...

The fossilized remains belong to Cosmopolitodus hastalis – an extinct mackerel shark closely related to the modern great ...

Researchers must interpret ecosystems based on fossilized remains and the sedimentary layers in which they are found. Shark teeth are especially valuable for this purpose. Their abundance and ...

Peruvian paleontologists have revealed a 9-million-year-old fossil of Cosmopolitodus Hastalis, a precursor to the great white shark. Found in Peru's Pisco basin, the exceptional fossil includes a ...