Taxon
Allothalassoceras bogoslovskayae
Allothalassoceras busterense (Qualifier: sn)
Allothalassoceras sangvorense
Aristoceras appressum
Aristoceras chkalovi+
Aristoceratoides varicosus+
Gleboceras mirandum+*
Mapesites chautauquaensis+
Prothalassoceras bashkiricum
Thalassoceras gemmellaroi*