Name | From | To | Age range |
---|---|---|---|
Tetrad sp.3 | Emsian | Emsian |
|
Tetrad type 3 | Late Ordovician | Late Ordovician |
|
Tetrad sp.A Manu.et al,1989 | Miocene | Miocene |
|
Tetrad sp.1 | Emsian | Emsian |
|
Tetrad sp. Stee.et al,2000 | Nd | Nd |
|
Tetrad spore type 1,Saxe.& Rao,1996 | Early Miocene | Early Miocene |
|
Tetrad type C Vavr.,1984 | Late Ordovician | Late Ordovician |
|
Tetrad type A Vavr.,1984 | Ashgillian | Ashgillian |
|
Tetrad type F | Late Ordovician | Late Ordovician |
|
Tetrad sp. Vavr.,1984 | Late Ordovician | Late Ordovician |
|
Tetrad sp.B Manu.et al,1989 | Miocene | Miocene |
|
Tetrad type A | Late Ordovician | Late Ordovician |
|
Tetrad sp.2 | Emsian | Emsian |
|