Children (23 direct children, 23 direct and indirect children):
Didymoceras navarroensis
Didymoceras nebrascense
Didymoceras stevensoni
Didymoceras draconis
Didymoceras cochleatus
Didymoceras newtoni
Didymoceras awajiense
Didymoceras cheyenense
Didymoceras cheyennense
Didymoceras subtuberculatum
Didymoceras uncus
Didymoceras tortus
Didymoceras nicolletii
Didymoceras hornbyense
Didymoceras umbilicatus
Didymoceras tenuicostatus
Didymoceras californicum
Didymoceras tricostatus
Didymoceras binodosum
Didymoceras platycostatum
Didymoceras angulatum
Didymoceras donezianum
Didymoceras vespertinus