Children (9 direct children, 12 direct and indirect children):
Didymograptus bartrumi
Didymograptus distinctus
Didymograptus eocaduceus
Didymograptus hemicyclus
Didymograptus taylori
Corymbograptus
Didymograptellus
Didymograptus
(tree size 3)
Expansograptus