Gastropoda - Cerithimorpha - Orthonemidae

Alternative combination: Streptacis gundyensis

Full reference: E. K. Yoo. 1994. Carboniferous Mollusca from the Tamworth Belt, New South Wales, Australia. Records of the Australia Museum 46(2):63-120

Belongs to Knightella according to P. J. Wagner 2011

Sister taxa: Knightella hydrobiformis, Knightella regularis

Type specimen: Its type locality is Marohn. Yoo Loc. 28. 150 m west of Marohn homestead, which is in a Tournaisian carbonate limestone in the Dangarfield Formation of Australia.

Ecology: epifaunal