Genus Membranosphaera

Species total:
20
Age range:
230 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Membranosphaera taiwaniana Early Cretaceous Early Albian
Membranosphaera triangularis Early Valanginian Early Valanginian
Membranosphaera tuberculata Oxfordian Campanian