Aspidorhynchus. It is an extinct genus of actinopterygian fish that existed during the Jurassic and Cretaceous periods . Its fossils have been found in Europe and Antarctica .
Description
It was a slender fish and a fast swimmer, about 60 cm long. It had teeth aligned along its elongated jaws. It also had heavy scales and a symmetrical tail. The upper jaw was longer than the lower jaw, ending in a toothless beak . Although superficially it resembles the current Lepisosteus , its closest living relative is the Amia calva .
Ecology
The intestinal content found in the fossils shows evidence that they mainly ate fish , although one is known in whose intestinal content is material belonging to the reptile Homoeosaurus.
