Psophosphaera |
Psophosphaera simplex
|
USSR |
Jurassic |
Early Cretaceous |
Ptychodiporina |
Ptychodiporina
|
Nd |
Nd |
|
Ptychomonoporina |
Ptychomonoporina
|
Nd |
Nd |
|
Ptychomonoporina |
Ptychomonoporina fusa
|
USSR |
Late Cretaceous |
Tertiary |
Ptychopentaporina |
Ptychopentaporina
|
Nd |
Nd |
|
Ptychopentaporina |
Ptychopentaporina alniformis
|
USSR |
Late Cretaceous |
Tertiary |
Ptychopolyporina |
Ptychopolyporina
|
Nd |
Nd |
|
Ptychotetraporina |
Ptychotetraporina
|
Nd |
Nd |
|
Ptychotetraporina |
Ptychotetraporina rotundaquadrangularis
|
USSR |
Late Cretaceous |
Tertiary |
Ptychotriporina |
Ptychotriporina
|
Nd |
Nd |
|
Simozonotriletes |
Simozonotriletes
|
Nd |
Nd |
|
Stenozonotriletes |
Stenozonotriletes
|
Nd |
Nd |
|
Stenozonotriletes |
Stenozonotriletes typicus
|
USSR |
Jurassic |
Early Cretaceous |
Tetraporina |
Tetraporina
|
Nd |
Nd |
|
Trachytriletes |
Trachytriletes
|
Nd |
Nd |
|
Trematozonotriletes |
Trematozonotriletes
|
Nd |
Nd |
|
Trilobozonotriletes |
Trilobozonotriletes
|
Nd |
Nd |
|