From Wikipedia, the free encyclopedia
| Hemicyclaspis |
| Type |
jawless fish |
| Length |
5,2 in (13 cm) |
| Movement |
swimming |
| Age |
410 million years ago |
| Diet |
carnivore |
| Environment |
ocean floor |
| Distribution |
Canada, England |
Hemicyclaspis is an extinct genus of primitive jawless fish, closely related to Cephalaspis, that lived in the Devonian period in what is now Europe and North America.
A typical cephalaspid, Hemicyclaspis had a heavily armored, shovel-shaped headshield. It is thought to have been a better swimmer than most of its relatives because of its powerful tail, stabilizing dorsal fin and the keel-shaped hydrodynamic edges of its head shield. Hemicyclaspis probably foraged the ocean floor for food.
