Tetraniveum |
Tetraniveum arenigum
|
Nd |
Arenigian |
|
Tetraniveum |
Tetraniveum arenigum
|
Nd |
Arenigian |
|
Tetraniveum |
Tetraniveum arenigum
|
England(Lancashire) |
Late Tremadocian |
Early Arenigian |
Tetrapidites |
Tetrapidites
|
Nd |
Nd |
|
Tetrapidites |
Tetrapidites ichsensis
|
Nd |
Nd |
|
Tetrapidites |
Tetrapidites laevigatus
|
Nd |
Thanetian |
|
Tetrapidites |
Tetrapidites lohsensis
|
Nd |
Late Neogene |
|
Tetrapidites |
Tetrapidites psilatus
|
Nd |
Late Tertiary |
|
Tetraporina |
Tetraporina
|
Nd |
Nd |
|
Tetraporina |
Tetraporina horologia
|
Nd |
Late Mississippian |
|
Tetraporopollenites |
Tetraporopollenites
|
Nd |
Nd |
|
Tetraporopollenites |
Tetraporopollenites lohsensis
|
Nd |
Late Neogene |
|
Thalassiphora |
Thalassiphora
|
Nd |
Nd |
|
Thalassiphora |
Thalassiphora spinosa
|
Nd |
Senonian |
|
Thrypticosphaera |
Thrypticosphaera
|
Nd |
Nd |
|
Thrypticosphaera |
Thrypticosphaera magnifica
|
Nd |
Eocene |
|
Thuledinium |
Thuledinium
|
Nd |
Nd |
|