Class Rhynchonellata Williams 1996
Order Athyridida Boucot et al. 1964
Family Athyrididae McCoy 1841
Genus Composita Brown, 1849

The Brachiopod genus Composita existed from 376 to 252 million years ago. It became extinct during the Permian-Triassic Extinction event. Composita is found on every continent except Antarctica.

Species argentena Shepard, 1838

Composita argentena from the Brush Creek limestone at SL 6533
Fig. 01.—Composita argentena from the Brush Creek limestone at SL 6533; A–B, CG-0779; C–D, CG-0781; E–F, CG-0254; G–H, CG-0788. Scale bar = 1 cm.

Species magna Newell, 1934

Composita magna
Fig. 01.—Composita magna from the Brush Creek limestone at SL 6533; A–B, CG-0368; C–D, CG-0253; E–F, CG-0257; Scale bar = 1 cm.
Composita magna
Fig. 02.—Composita magna from the Brush Creek limestone at SL 6533; A–B, CG-0086; C–D, CG-0328; Scale bar = 1 cm.

References

Late Carboniferous Fossils from the Glenshaw Formation in Armstrong County, Pennsylvania

Localities: Locality SL 6445 | Locality SL 6533

Trilobita | Crinoidea

Bivalvia: Allopinna | Parallelodon | Septimyalina

Cephalopoda: Metacoceras

Gastropoda: Amphiscapha | Bellerophon | Cymatospira | Euphemites | Meekospira | Orthonychia | Patellilabia | Pharkidonotus | Retispira | Shansiella | Worthenia

Brachiopoda: Cancrinella | Composita | Isogramma | Linoproductus | Neospirifer | Parajuresania | Pulchratia

Chordata: Petalodus | Glikmanius