Anthosphaera
(tree size 3)
Balaniger
(tree size 1)
Calicasphaera
(tree size 3)
Calyptrolithina
(tree size 7)
Calyptrolithophora
(tree size 4)
Calyptrosphaera
(tree size 11)
Corisphaera
(tree size 5)
Crystallolithus
Daktylethra
(tree size 2)
Flosculosphaera
(tree size 2)
Gliscolithus
(tree size 2)
Helladosphaera
(tree size 4)
Holococcolithophora
(tree size 6)
Homozygosphaera
(tree size 5)
Periphyllophora
(tree size 1)
Poricalyptra
(tree size 4)
Poritectolithus
(tree size 3)
Quaternariella
(tree size 1)
Sphaerocalyptra
(tree size 2)
Syracolithus
(tree size 7)
Turrisphaera
Zygosphaera
(tree size 4)
Ottavianus
(tree size 2)