This rare fish has been called a living fossil
The 
coelacanth had been considered extinct, known only from the fossil... [DOC] [TLE] Coelacanths, Coelacanth Pictures, Coelacanth Facts - National ... [PAR] Thought to have been long extinct, scientists discovered these "living fossils" in ... 
the fish to widen its mouth for large prey; an oil-filled tube, called a notochord,... [DOC] [TLE] Coelacanth, the Famous "Living Fossil" Fish, Gets Endangered ... [PAR] The famous living fossil known as the West Indian Ocean coelacanth ...