Gastropoda - Prosobranchia - Pseudozygopleuridae

Alternative combination: Pseudozygopleura (Pseudozygopleura) terebra

Full reference: J. B. Knight. 1930. The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: the Pseudozygopleurinae. Journal of Paleontology Memoir 4(4):1-88

Belongs to Palaeostylus (Pseudozygopleura) according to E. L. Yochelson and B.W. Saunders 1967

Sister taxa: Palaeostylus (Pseudozygopleura) belli, Palaeostylus (Pseudozygopleura) eucharis, Pseudozygopleura (Hemizygoides), Pseudozygopleura (Pseudozygopleura), Pseudozygopleura acuminata, Pseudozygopleura angustata, Pseudozygopleura assertonsoris, Pseudozygopleura baltea, Pseudozygopleura cirritus, Pseudozygopleura condrai, Pseudozygopleura contractus, Pseudozygopleura croneisi, Pseudozygopleura deloi, Pseudozygopleura eximia, Pseudozygopleura funis, Pseudozygopleura girtyi, Pseudozygopleura gracilis, Pseudozygopleura gradatus, Pseudozygopleura irrugata, Pseudozygopleura kellettae, Pseudozygopleura knighti, Pseudozygopleura lanceolatus, Pseudozygopleura lefebvrei, Pseudozygopleura limus, Pseudozygopleura macra, Pseudozygopleura micra, Pseudozygopleura moorei, Pseudozygopleura mucronatus, Pseudozygopleura multicostata, Pseudozygopleura palus, Pseudozygopleura pandus, Pseudozygopleura perversa, Pseudozygopleura plummeri, Pseudozygopleura pluricostata, Pseudozygopleura pugonis, Pseudozygopleura pulchra, Pseudozygopleura pupa, Pseudozygopleura rectus, Pseudozygopleura restis, Pseudozygopleura schucherti, Pseudozygopleura scitula, Pseudozygopleura scruposus, Pseudozygopleura semicostata, Pseudozygopleura sinuosior, Pseudozygopleura subulatus, Pseudozygopleura tenuivirga, Pseudozygopleura variegata, Pseudozygopleura yandellana, Pseudozygopleura (Pyrgozyga) warthini

Type specimen: YPM 12966, a shell. Its type locality is SL-1. Headwaters of Feefee Creek, north of Olive St. & west of Lindberg Blvd., 1.5 km northwest of Stratmann (Olivette), which is in a Moscovian marine shale in the Appanoose Formation of Missouri.

Average measurements (in mm): shell 6.10 x 1.40