Trilobopsis
(tree size 11)
Xolotrema
(tree size 8)
Mesodon
(tree size 28)
Webbhelix
(tree size 2)
Praticolella
(tree size 21)
Inflectarius
(tree size 14)
Neohelix
(tree size 12)
Cryptomastix
(tree size 16)
Ashmunella
(tree size 97)
Allogona
(tree size 7)
Polygyra
(tree size 148)
Daedalochila
(tree size 33)
Linisa
(tree size 34)
Vespericola
(tree size 30)
Stenotrema
(tree size 36)
Euchemotrema
(tree size 15)
Appalachina
(tree size 4)
Lobosculum
(tree size 2)
Triodopsis
(tree size 59)
Patera
(tree size 20)
Patera (gastropod)
Fumonelix
(tree size 11)
Giffordius
(tree size 3)
Polygyriscus
(tree size 1)
Millerelix
(tree size 11)
Hochbergellus
(tree size 1)
Polygyrinae
(tree size 12)
Triodopsinae
(tree size 8)
Zhenjiangospira