From Wikipedia, the free encyclopedia
| Thelodus |
| Type |
jawless fish |
| Length |
7,2 in (18 cm) |
| Movement |
swimming |
| Age |
420 million years ago |
| Diet |
carnivore |
| Environment |
ocean floor |
| Distribution |
worldwide |
Thelodus is an extinct genus of primitive jawless fish that lived in the Silurian period.
Thelodus belonged to the Thelodonti, a group of agnathes lacking the armored plating characteristic of the related Heterostraci. The position of Thelodus`s mouth suggests it fed on the ocean floor. Despite this lifestyle it was also a good swimmer, as indicated by its elongated lower caudal lobe and stabilizing dorsal fin, anal fin and two pectoral fins.
