Trigonotretidae is an extinct family of articulate

brachiopod Brachiopods (), phylum (biology), phylum Brachiopoda, are a phylum of animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear e ...

s belonging to the order

Spiriferida Spiriferida is an order of extinct articulate brachiopod fossils which are known for their long hinge-line, which is often the widest part of the shell. In some genera (e.g. ''Mucrospirifer'') it is greatly elongated, giving them a wing-like app ...

. These stationary epifaunal suspension feeders lived in the

Carboniferous The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...

and

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

periods, from 360.7 to 252.3 Ma.

Genera

*'' Aperispirifer'' Waterhouse, 1968 *'' Betaneospirifer'' Gatinaud, 1949 *'' Blasispirifer'' Kulikov, 1950 *'' Brachythyrinella'' *'' Cartorhium'' Cooper and Grant, 1976 *'' Costatispirifer'' Archbold and Thomas, 1985 *'' Crassispirifer'' Archbold and Thomas, 1985 *'' Cratispirifer'' Archbold and Thomas, 1985 *'' Fasciculatia'' Waterhouse, 2004 *'' Frechella'' *'' Fusispirifer'' Waterhouse, 1966 *'' Gibbospirifer'' Waterhouse, 1971 *'' Gypospirifer'' Cooper and Grant, 1976 *'' Imperiospira'' Archbold and Thomas, 1993 *'' Kaninospirifer'' *'' Lepidospirifer'' Cooper and Grant, 1969 *'' Neospirifer'' Fredericks, 1919 *'' Occidalia'' Archbold, 1997 *'' Pondospirifer'' Waterhouse, 1978 *'' Quadrospira'' Archbold, 1997 *'' Saltospirifer'' Cisterna and Archbold, 2007 *'' Septospirifer'' Waterhouse, 1971 *'' Sulciplica'' Waterhouse, 1968 *'' Trigonotreta'' Koenig, 1825

References

{{Taxonbar, from=Q18354474 Prehistoric protostome families Brachiopod families Spiriferida Carboniferous first appearances Permian extinctions