Gastropoda - Euomphalina - Helicotomidae
Alternative combinations: Trochonema tricarinata, Trochonema tricarinatum
Full reference: E. Billings. 1859. Fossils of the Calciferous Sandrock, including those of a deposit of white limestone at Mingan, supposed to belong to the formation. The Canadian Naturalist and Geologist 4:345-367
Belongs to Lophonema according to P. J. Wagner 2023
See also Billings 1859 and Twenhofel 1938
Sister taxa: Lophonema abrupta, Lophonema calphurnia, Lophonema circumlirata, Lophonema costata, Lophonema frydai, Lophonema orientalia, Lophonema peccatonica, Lophonema perstriata, Lophonema taneyensis, Lophonema wuhuensis
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Harbour Island, Mingan Island Group (Ordovician of Quebec)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.