''Simosteus tuberculatus'' is a small

arthrodire Arthrodira (Greek for "jointed neck") is an Order (biology), order of extinct armored, jawed fishes of the class Placodermi that flourished in the Devonian period before their sudden extinction, surviving for about 50 million years and penetratin ...

placoderm from the

Gogo Formation The Gogo Formation in the Kimberley region of Western Australia is a Lagerstätte that exhibits exceptional preservation of a Devonian reef community. The formation is named after Gogo Station, a cattle station where outcrops appear and fossils ...

of Western Australia. Unlike other members of the arthrodire

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Camuropiscidae Camuropiscidae is a family of mostly small, bullet or spindle-shaped extinct arthrodire placoderms from the Late Devonian. With the exception of the snub-nosed '' Simosteus'', camuropiscid placoderms are characterized by an elongated, tubular s ...

, ''S. tuberculatus'' had a short, snub-nose, as directly implied by the translation of its generic name, "snub-nosed bone." Although ''S. tuberculatus'' lacks the characteristic elongated nose, it shares other diagnostic features of camuropiscids, such as cheekplates sutured to the cranium. So far, the only specimen known is of an incomplete cranium.

References

Camuropiscidae {{Placoderm-stub