Rhipidognathus
Species
Rhipidognathus rowlandensis Kohut & Sweet, 1968
Occurrence: Edenian - Richmondian
Reference: Kohut and Sweet, 1968; Sweet, 1979
Single-element genus
Rhipidognathus symmetricus Branson, Mehl, & Branson, 1951
Occurrence: Edenian - Richmondian
Reference: Bergström and Sweet, 1966; Kohut and Sweet, 1968; Sweet, 1979
Includes subspecies Rhipidognathus symmetricus symmetricus and Rhipidognathus symmetricus discretus (also known as Rhipidognathus discreta Bergström and Sweet, 1966)
Includes form-species: bryantodiniform or ozarkodiniform element, prioniodiniform element, trichonodelliform or zygognathiform element