Umbilicosphaera anulata
Umbilicosphaera foliosa
Umbilicosphaera anulus
Umbilicosphaera calvata
Umbilicosphaera hulburtiana
Umbilicosphaera scituloma
Umbilicosphaera sibogae
Umbilicosphaera angustiforamen
Umbilicosphaera detecta
Umbilicosphaera henrikseniae
Umbilicosphaera protoannula
Umbilicosphaera rosacea