| Name | From | To | Age range |
|---|---|---|---|
| Orthosphaeridium vibrissiferum | Ordovician | Ashgillian |
|
| Orthosphaeridium triangulare | Late Cambrian | Late Cambrian |
|
| Orthosphaeridium transitorium | Late Llanvirnian | Late Llanvirnian |
|
| Orthosphaeridium trabeculatum | Early Paleozoic | Llandeilian |
|
| Orthosphaeridium ternatum | Early Paleozoic | Ashgillian |
|
| Orthosphaeridium sp.Yin,1995 | Arenigian | Early Llanvirnian |
|
| Orthosphaeridium sp.A Yin,1995 | Arenigian | Early Llanvirnian |
|
| Orthosphaeridium sp.6 | Idavere | Idavere |
|
| Orthosphaeridium sp.4 | Caradocian | Caradocian |
|
| Orthosphaeridium sp. Uute.& Tynn.,1991 | Early Caradocian | Middle Caradocian |
|
| Orthosphaeridium sp. Down.,1973 | Ashgillian | Ashgillian |
|
| Orthosphaeridium sp | Late Cambrian | Wenlockian |
|
| Orthosphaeridium rectangulare | Early Paleozoic | Early Gothlandian |
|
| Orthosphaeridium quadrinatum | Arenigian | Onnian |
|
| Orthosphaeridium quadricorne | Late Llanvirnian | Late Llanvirnian |
|
| Orthosphaeridium procerum | Llanvirnian | Llanvirnian |
|
| Orthosphaeridium octospinosum | Early Ordovician | Late Ordovician |
|