Name | From | To | Age range |
---|---|---|---|
Tetrad sp.2 | Emsian | Emsian |
|
Tetrad sp.3 | Emsian | Emsian |
|
Tetrad type 39 | Early Triassic | Jurassic |
|
Tetrad forma 12 | Albian | Turonian |
|
Tetrad planar | Late Cretaceous | Middle Paleocene |
|
Tetrad small | Paleocene | Early Eocene |
|
Tetrad tetrahedral | Early Eocene | Middle Eocene |
|
Tetrad spore type 1,Saxe.& Rao,1996 | Early Miocene | Early Miocene |
|
Tetrad type xxx | Miocene | Late Neogene |
|
Tetrad type xxxi | Miocene | Late Neogene |
|
Tetrad sp.B Manu.et al,1989 | Miocene | Miocene |
|
Tetrad sp.A Manu.et al,1989 | Miocene | Miocene |
|
Tetrad sp. Stee.et al,2000 | Nd | Nd |
|