From Wikipedia, the free encyclopedia
| Tristychius |
| Type |
shark |
| Length |
2 ft (60 cm) |
| Movement |
swimming |
| Age |
350 million years ago |
| Diet |
carnivore |
| Environment |
ocean |
| Distribution |
Scotland |
Tristychius is an extinct genus of shark from the Carboniferous era.
It was a small shark with a well-developed caudal fin that was aimed upwards, similar to that of many modern sharks. Physically it may have resembled a cat shark. Tristychius also had spikes attached to the bases of its dorsal fins, probably for protection against predators. It was related to the larger Hybodus.
