Children (24 direct children, 81 direct and indirect children):
Gomphoceras
Acleistoceratidae
(tree size 7)
Brevicoceratidae
(tree size 4)
Diestoceratidae
(tree size 1)
Eudoceras
Graciloceratidae
(tree size 1)
Jovellaniidae
(tree size 3)
Nothoceratidae
(tree size 6)
Oncoceratidae
(tree size 7)
Spanioceras
Tripteroceratidae
Valcouroceratidae
(tree size 7)
Valcourocratidae
Trimeroceratidae
(tree size 3)
Hemiphragmoceratidae
(tree size 3)
Poterioceratidae
(tree size 1)
Cyrtoceratidae
(tree size 2)
Kallholnoceras
Karoceratidae
(tree size 5)
Polyelasmoceratidae
(tree size 5)
Archiacoceratidae
(tree size 1)
Phthanoncoceratidae
(tree size 1)
Maelonoceras
Oncoceras