Hyphantozyga gracilis Knight 1930

Gastropoda - Prosobranchia - 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(4):1-88

Belongs to Hyphantozyga according to P. J. Wagner 2017

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 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 marine shale in the Appanoose Formation of Missouri.

Distribution:

• Desmoinesian of United States (1: Ohio collection)

• Carboniferous of United States (1: Missouri)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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