Phragmodus
Species
Phragmodus undatus Branson & Mehl, 1933
Occurrence: Edenian - Richmondian
Reference: Bergström and Sweet, 1966; Kohut and Sweet, 1968; Sweet, 1979
Includes form-species: Phragmodus undatus Branson & Mehl, 1933, Dichognathus brevis Branson & Mehl, 1933, Dichognathus typica Branson & Mehl, 1933, Oisotodus abundans Branson & Mehl, 1933