| Name | From | To | Age range |
|---|---|---|---|
| Ooidium | Precambriam | Paleozoic |
|
| Ooidium apertum | Algonkian | Algonkian |
|
| Ooidium barbatum | Early Triassic | Anisian |
|
| Ooidium bicorne | Early Cambrian | Early Cambrian |
|
| Ooidium clavigerum | Late Cambrian | Late Cambrian |
|
| Ooidium corollatum | Late Proterozoic | Cambrian |
|
| Ooidium fibrillum | Late Proterozoic | Cambrian |
|
| Ooidium guttiforme | Cambrian | Cambrian |
|
| Ooidium invisum | Middle Cambrian | Late Cambrian |
|
| Ooidium largificum | Tremadocian | Tremadocian |
|
| Ooidium minutum | Middle Cambrian | Middle Cambrian |
|
| Ooidium mordidum | Early Paleozoic | Llanvirnian |
|
| Ooidium punctulatus | Middle Cambrian | Middle Cambrian |
|
| Ooidium pungens | Middle Cambrian | Middle Cambrian |
|
| Ooidium revinium | Early Paleozoic | Early Paleozoic |
|
| Ooidium rossicum | Early Paleozoic | Early Gothlandian |
|
| Ooidium sablincaense | Cambrian | Late Cambrian |
|