†Hormotoma trentonensis crassa Wilson 1951
Gastropoda - Murchisoniina - Loxonematidae
Alternative combination: Hormotoma crassa
Full reference: A. E. Wilson. 1951. Gastropoda and Conularida of the Ottawa Formation of the Ottawa - St. Lawrence Lowland. Geological Survey of Canada Bulletin 17:1-149
Belongs to Hormotoma trentonensis according to A. E. Wilson 1951
See also Wagner 2020
Sister taxon: Hormotoma trentonensis plana
Distribution: found only at Wilson 1951 Loc. 041. Brigham’s Quarry, Brigham, 0.5 km NE of Brigham (Ordovician of Quebec)