Children (23 direct children, 139 direct and indirect children):
Pachydiscus
(tree size 48)
Anapachydiscus
(tree size 2)
Eupachydiscus
(tree size 5)
Lewesiceras
(tree size 6)
Menuites
(tree size 7)
Urakawites
Eopachydiscus
Joaquinites
(tree size 1)
Parapachydiscus
(tree size 27)
Neopachydiscus
Cobbanoscaphites
Canadoceras
(tree size 5)
Patagiosites
(tree size 5)
Chimbuites
(tree size 3)
Nowakites
(tree size 3)
Baskaniceras
(tree size 2)
Pseudopuzosia
Tongoboryceras
(tree size 1)
Pseudojacobites
(tree size 1)
Teshioites
Pachydiscoides
Menabonites
Tuberodiscoides