Genus Alterbia

Species total:
45
Age range:
141 - 0 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Alterbia circula Danian Late Paleocene
Alterbia microgranulata Paleocene Middle Eocene
Alterbia puyangensis Early Tertiary Middle Miocene
Alterbia rhombohedra Early Paleocene Early Paleocene
Alterbia magnifica Eocene Eocene
Alterbia bellula Early Eocene Late Eocene
Alterbia bicellula Early Eocene Middle Eocene
Alterbia earnleyensis Early Eocene Middle Eocene
Alterbia ectorugosa Late Eocene Late Eocene
Alterbia mauthei Nd Nd
Alterbia jurassica Nd Nd