Bivalvia - Protobranchia - Nuculanidae

Alternative combination: Nuculana rugodorsata

Full reference: W. H. Easton. 1962. Carboniferous formations and faunas of central Montana. United States Geological Survey Professional Paper 348:1-126

Belongs to Phestia according to J. W. Busanus and R. D. Hoare 1991

Sister taxa: Phestia basedowi, Phestia corrugata, Phestia darwini, Phestia elongata, Phestia hunanensis, Phestia inflatiformis, Phestia lusabaensis, Phestia nova, Phestia obtusa, Phestia pandoraeformis, Phestia perumbonata, Phestia sinuata, Phestia speluncaria, Phestia subacuta, Phestia thompsoni, Phestia wortheni, Phestia zhejiangensis

Type specimen: Its type locality is USGS "blue file" Loc13414, which is in a Serpukhovian offshore limestone/siltstone in the Heath Formation of Montana.

Ecology: facultatively mobile infaunal deposit feeder-suspension feeder

Average measurements (in mm): shell 7.80 x 3.20