Meekoceratidae
(tree size 128)
Clypeoceratidae
Proptychitidae
(tree size 132)
Paranannitidae
(tree size 41)
Gyronitidae
(tree size 28)
Galfettitidae
(tree size 38)
Dieneroceratidae
(tree size 23)
Byrrangoceratidae
(tree size 7)
Mullericeratidae
(tree size 5)
Albanitidae
(tree size 2)