Furcacaudidae is a family of

thelodont Thelodonti (from Greek: "feeble teeth")Maisey, John G., Craig Chesek, and David Miller. Discovering fossil fishes. New York: Holt, 1996. is a class (biology), class of extinct jawless fishes with distinctive Fish scale, scales instead of large pl ...

agnathan Agnatha (, Ancient Greek 'without jaws') is an infraphylum of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present (cyclostomes) and extinct (conodonts and ostracoderms) species. Among recent animals, cyclostomes ...

from the Lower Devonian. It is the type family of the order

Furcacaudiformes Furcacaudiformes is an extinct order of jawless fish in the class Thelodonti. Because the paucity of intact fossils, especially since some families are known entirely from scale fossils, taxonomy of thelodonts is based primarily on scale morpho ...

References

External links

* Devonian jawless fish Thelodonti Prehistoric jawless fish families Early Devonian first appearances Early Devonian extinctions {{Paleo-jawless-fish-stub