Gastropoda - Zygopleuroidea - Pseudozygopleuridae
Alternative combinations: Hemizyga (Hyphantozyga) gracilis, Ploceozyga (Hyphantozyga) gracilis, Plocezyga (Hyphantozyga) gracilis
Full reference: J. B. Knight. 1930. The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: the Pseudozygopleurinae. Journal of Paleontology Memoir 4(1):1-88
Belongs to Hyphantozyga according to P. J. Wagner 2023
See also Hoare and Sturgeon 1980, Hoare and Sturgeon 1980, Knight 1930, Kues and Batten 2001 and Pan and Erwin 2002
Sister taxa: Hyphantozyga fenestrata, Hyphantozyga filicosta, Hyphantozyga fusiforma, Hyphantozyga grandis, Hyphantozyga granifera, Hyphantozyga khaophrikensis, Hyphantozyga knighti, Hyphantozyga noinskyi, Hyphantozyga perattenuata, Hyphantozyga pulchra, Hyphantozyga textilis, Ploceozyga (Hyphantozyga) cancellata, Ploceozyga (Hyphantozyga) matanensis
Type specimen: YPM 13003, 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 offshore shale in the Appanoose Formation of Missouri.
Distribution:
• Carboniferous of United States (2: Missouri, Ohio collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.