Genus Alterbia

Species total:
45
Age range:
141 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Alterbia dilwynensis Maastrichtian Maastrichtian
Alterbia polymorpha Maastrichtian Maastrichtian
Alterbia ectorugosa Late Eocene Late Eocene
Alterbia xinjiangensis Paleocene Paleocene
Alterbia magnifica Eocene Eocene
Alterbia macrocysta Campanian Campanian
Alterbia ingramii Turonian Turonian
Alterbia raijae Maastrichtian Maastrichtian
Alterbia acribes Early Albian Early Albian
Alterbia mauthei Nd Nd
Alterbia rhombohedra Early Paleocene Early Paleocene