Genus Bipolaribucina

Species total:
11
Age range:
65 - 11 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Bipolaribucina Early Tertiary Middle Oligocene
Bipolaribucina biornata Eocene Eocene
Bipolaribucina conicosa Early Oligocene Middle Oligocene
Bipolaribucina huanghuaensis Eocene Middle Oligocene
Bipolaribucina liaoningensis Early Tertiary Middle Oligocene
Bipolaribucina oblongata Early Oligocene Middle Oligocene
Bipolaribucina paradoxa Late Priabonian Serravallian
Bipolaribucina sp Nd Nd
Bipolaribucina sp.1 Middle Oligocene Middle Oligocene
Bipolaribucina sp.2 Eocene Eocene
Bipolaribucina tianjinensis Early Oligocene Middle Oligocene