13.2cm Shark (Hybodus) Dorsal Spine from Morocco 95 million years

This is a 13.2cm fossil, dorsal spine of a shark (Hybodus obtusus). Hybodus is an extinct genus of shark that lived during the Mesozoic Era, specifically during the Jurassic and Cretaceous periods. It was a relatively small shark, typically reaching lengths of around 2-3 meters (6-10 feet).

Hybodus had a streamlined body and sharp, pointed teeth, which indicates that it was likely a fast and agile swimmer. It had two dorsal fins, a pair of pectoral fins, and a heterocercal tail (asymmetrical tail with the upper lobe larger than the lower lobe), which are common features seen in many shark species.

It is believed that Hybodus was an opportunistic predator, feeding on a variety of prey including fish, cephalopods, and other marine organisms.