Classification of Rohr et al. 1981
G. †Oriostoma Munier-Chalmas 1876
show all | hide all
†Oriostoma clarki Rohr et al. 1981
†Oriostoma helicinum Lindström 1884
G. †Platyostoma Conrad 1842
show all | hide all
†Platyostoma boggsi Rohr et al. 1981
†Platyostoma naticoides Etheridge, Jr. 1878
Subg. †Platyceras (Orthonychia) Hall 1843
show all | hide all
†Platyceras (Orthonychia) baldwini Rohr et al. 1981
Subg. †Trochonema (Eunema) Salter 1859
show all | hide all
†Trochonema (Eunema) kaysi Rohr et al. 1981
Subg. †Platyceras (Platyceras) Conrad 1840
show all | hide all
†Platyceras (Platyceras) cornutum Hisinger 1837
hide
†Platyceras (Platyceras) cornutum loricatum Lindström 1884