ammonites
Spiriferella embrithes Cooper and Grant 1976 (lamp shell)

Rhynchonellata - Spiriferida - Spiriferellidae

Full reference: G. A. Cooper and R. E. Grant. 1976. Permian Brachiopods from West Texas, IV. Smithsonian Contributions to Paleobiology 21:1923-2607

Belongs to Spiriferella according to G. A. Cooper and R. E. Grant 1976

Sister taxa: Spiriferella antefurcata, Spiriferella arctica, Spiriferella australasica, Spiriferella bituchensis, Spiriferella borealica, Spiriferella burgaliensis, Spiriferella calcarata, Spiriferella clypeata, Spiriferella consimilis, Spiriferella cundlegoensis, Spiriferella etheridgei, Spiriferella gloverae, Spiriferella gravis, Spiriferella hinganensis, Spiriferella interplicata, Spiriferella jilongensis, Spiriferella keilhavii, Spiriferella keilhaviiformis, Spiriferella lata, Spiriferella leviplica, Spiriferella levis, Spiriferella loveni, Spiriferella magna, Spiriferella modesta, Spiriferella mugunica, Spiriferella nepalensis, Spiriferella orientensis, Spiriferella ovata, Spiriferella persaranae, Spiriferella personata, Spiriferella primaeva, Spiriferella propria, Spiriferella pseudodraschei, Spiriferella pseudotibetana, Spiriferella rajah, Spiriferella salteri, Spiriferella saranae, Spiriferella scobina, Spiriferella scobinoidea, Spiriferella scopulosus, Spiriferella simplex, Spiriferella sinica, Spiriferella subsalteri, Spiriferella sulcifer, Spiriferella supplanta, Spiriferella tetralobata, Spiriferella turusica, Spiriferella unicostata, Spiriferella vaskovskii, Spiriferella vojnowskii, Spiriferella wangi, Spiriferella wimanni, Spiriferella yukonensis

Type specimen: USNM 152951j, a shell (Articulated shell). Its type locality is USNM706c, Hess Canyon, Glass Mountains, which is in a Roadian marine limestone in the Word Formation of Texas.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 18.5 x 18.9, valve 8.40 x 9.80