Strophomenata - Productida - Aulostegidae

Full reference: P.R. Hoover. 1981. Paleontology, Taphonomy, and Paleoecology of the Palmarito Formation (Permian of Venezuela). Bulletins of American Paleontology 80(313):1-138

Belongs to Xenosteges according to P.R. Hoover 1981

Sister taxa: Xenosteges adherens, Xenosteges anomalus, Xenosteges magnus, Xenosteges quadratus, Xenosteges trivialis, Xenosteges umbonatus

Type specimen: USNM 221062, a shell (Articulated shell)

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 2.97 x 3.59