| Name | From | To | Age range |
|---|---|---|---|
| Prolixosphaeridium | Mesozoic | Cenozoic |
|
| Prolixosphaeridium anasillum | Callovian | Early Ryazanian |
|
| Prolixosphaeridium apiculatum | Late Jurassic | Late Jurassic |
|
| Prolixosphaeridium basifurcatum | Kimmeridgian | Early Valanginian |
|
| Prolixosphaeridium capitatum | Early Bathonian | Barremian |
|
| Prolixosphaeridium conulum | Ryazanian | Maestrichtian |
|
| Prolixosphaeridium deirense | Bathonian | Coniacian |
|
| Prolixosphaeridium dictyophorum | Late Kimmeridgian | Tithonian |
|
| Prolixosphaeridium elongatum | Barremian | Albian |
|
| Prolixosphaeridium floccum | Late Oxfordian | Late Oxfordian |
|
| Prolixosphaeridium floccus | Nd | Nd |
|
| Prolixosphaeridium foratum | Late Tithonian | Late Tithonian |
|
| Prolixosphaeridium fosheimense | Tithonian | Valanginian |
|
| Prolixosphaeridium granulosum | Jurassic | Rupelian |
|
| Prolixosphaeridium granulosus | Late Jurassic | Late Jurassic |
|
| Prolixosphaeridium inequiornatum | Neocomian | Middle Aptian |
|
| Prolixosphaeridium mixtispinosum | Callovian | Late Albian |
|