Beyrichites
(tree size 10)
Frechites
(tree size 11)
Gymnotoceras
(tree size 13)
Nicomedites
(tree size 10)
Parafrechites
(tree size 6)
Pleurofrechites
(tree size 5)
Nicholsites
(tree size 4)
Favreticeras
(tree size 4)
Frechitoides
(tree size 3)
Pseudohollandites
(tree size 3)
Chiratites
(tree size 2)
Kocaelia
(tree size 2)
Tuchodiceras
(tree size 2)
Guexites
(tree size 1)
Aghdarbandites
Dixieceras
(tree size 1)
Schreyerites
(tree size 1)
Semibeyrichites
(tree size 1)
Trachyornites
(tree size 1)
Phillipites
Salterites
Eudiscoceras
Serpianites
Gangadharites