Gastropoda - Prosobranchia - Pseudozygopleuridae

Alternative combinations: Loxonema attenuata semicostata, Loxonema semicostata, Palaeostylus (Pseudozygopleura) semicostata, Palaeostylus (Pseudozygopleura) semicostatus, Pseudozygopleura (Pseudozygopleura) semicostata

Synonym: Pseudozygopleura (Pseudozygopleura) inornata Knight 1930

Full reference: F. B. Meek. 1871. Descriptions of new species of invertebrate fossils from Ohio and other western states and territories. Proceedings of the Academy of Natural Sciences of Philadelphia 23:159-184

Belongs to Pseudozygopleura according to H. -Z. Pan and D. H. Erwin 2002

Sister taxa: Palaeostylus (Pseudozygopleura) belli, Palaeostylus (Pseudozygopleura) eucharis, Palaeostylus (Pseudozygopleura) terebrus, 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 sinuosior, Pseudozygopleura subulatus, Pseudozygopleura tenuivirga, Pseudozygopleura variegata, Pseudozygopleura yandellana, Pseudozygopleura (Pyrgozyga) warthini

Ecology: epifaunal

Average measurements (in mm): shell 8.10 x 3.47