Craniata
Costitrimerella Rong & Li, 1993
Dinobolus Hall, 1871
Eodinobolus Rowell, 1963
Fengzuella Li & Han, 1980
Gasconsia Northrop, 1939
Gotlandia Dall, 1870
Gyroselenella Li, 1985
Monomerella Billings, 1872
Ovidiella Nikitin & Popov, 1984
Palaeotrimerella Li & Han, 1980
Paradinobolus Li & Han, 1980
Peritrimerella Liang, 1983
Rhynobolus Hall, 1871
Sinotrimerella Li & Han, 1980
Trimerella Lindström, 1867
Yidurella Zeng, 1987
