Leiosphaeridia |
Leiosphaeridia tenuissima
|
Australia |
Proterozoic |
|
Oscillatoriopsis |
Oscillatoriopsis breviconvexa
|
Australia |
Proterozoic |
|
Chilodictyon |
Chilodictyon caloporum
|
Canada |
Proterozoic |
|
Eoentophysalis |
Eoentophysalis belcherensis
|
Canada |
Proterozoic |
|
Gunflintia |
Gunflintia
|
Canada |
Proterozoic |
|
Huroniospora |
Huroniospora
|
Canada |
Proterozoic |
|
Kakabekia |
Kakabekia umbellata
|
Canada |
Proterozoic |
|
Leptoteichos |
Leptoteichos golubicii
|
Canada |
Proterozoic |
|
Paleomegasquama |
Paleomegasquama coccolithoides
|
Canada |
Proterozoic |
|
Tawuia |
Tawuia dalensis
|
Canada |
Proterozoic |
|
Ericiasphaera |
Ericiasphaera spjeldnaesii
|
China |
Proterozoic |
|
Grypania |
Grypania spiralis
|
China |
Proterozoic |
|
Archaeoellipsoides |
Archaeoellipsoides
|
China |
Proterozoic |
|
Archaeoellipsoides |
Archaeoellipsoides
|
China |
Proterozoic |
|
Acritarch |
Acritarch
|
China |
Proterozoic |
|
Grypania |
Grypania
|
China |
Proterozoic |
|
Eohyella |
Eohyella dichotoma
|
Greenland |
Proterozoic |
|