Heterostomella americana
Cushman, 1936
identified by C. Brizio   
Cretaceous
American South

Heterostomella americana
Cushman, 1936
identified by C. Brizio   
Cretaceous
American South

Heterostomella austinana
Cushman, 1933
identified by scientist   
Cretaceous
North Africa

Heterostomella carinata
(Franke, 1914)
identified by scientist   
Cretaceous
Carpathians

Heterostomella foveolata
(Marsson, 1878)
identified by scientist   
Cretaceous
North European Plain

Heterostomella gracilis
Hofker, 1956
identified by scientist   
Cretaceous
North European Plain