| Name | From | To | Age range |
|---|---|---|---|
| Orthosphaeridium trabeculatum | Early Paleozoic | Llandeilian |
|
| Orthosphaeridium rectangulare | Early Paleozoic | Early Gothlandian |
|
| Orthosphaeridium clavum | Early Paleozoic | Early Paleozoic |
|
| Orthosphaeridium chondrodora | Cambrian | Ashgillian |
|
| Orthosphaeridium macroceros | Early Paleozoic | Early Paleozoic |
|
| Orthosphaeridium ternatum | Early Paleozoic | Ashgillian |
|
| Orthosphaeridium triangulare | Late Cambrian | Late Cambrian |
|
| Orthosphaeridium sp | Late Cambrian | Wenlockian |
|
| Orthosphaeridium extensum | Late Cambrian | Late Cambrian |
|
| Orthosphaeridium densiverrucosum | Ordovician | Llandoverian |
|
| Orthosphaeridium vibrissiferum | Ordovician | Ashgillian |
|
| Orthosphaeridium octospinosum | Early Ordovician | Late Ordovician |
|
| Orthosphaeridium | Early Ordovician | Ashgillian |
|
| Orthosphaeridium insculptum | Ordovician | Rhuddanian |
|
| Orthosphaeridium densigranosum | Ordovician | Llandoverian |
|
| Orthosphaeridium quadrinatum | Arenigian | Onnian |
|
| Orthosphaeridium bispinosum | Arenigian | Early Ashgillian |
|