Name | From | To | Age range |
---|---|---|---|
Alterbia pellucida | Early Santonian | Early Eocene |
|
Alterbia | Aptian | Early Tertiary |
|
Alterbia ambigua | Cenomanian | Middle Eocene |
|
Alterbia bicellula | Early Eocene | Middle Eocene |
|
Alterbia earnleyensis | Early Eocene | Middle Eocene |
|
Alterbia ovalis | Turonian | Middle Eocene |
|
Alterbia microgranulata | Paleocene | Middle Eocene |
|
Alterbia recticornis | Turonian | Middle Eocene |
|
Alterbia bellula | Early Eocene | Late Eocene |
|
Alterbia distincta | Early Tertiary | Early Oligocene |
|
Alterbia puyangensis | Early Tertiary | Middle Miocene |
|
Alterbia asymmetrica | Middle Albian | Quaternary |
|
Alterbia ingramii | Turonian | Turonian |
|
Alterbia acribes | Early Albian | Early Albian |
|
Alterbia raijae | Maastrichtian | Maastrichtian |
|
Alterbia mauthei | Nd | Nd |
|
Alterbia rhombohedra | Early Paleocene | Early Paleocene |
|