Genus
Arcosphaeridium Uutela et Tynni, 1991
| Images | ||||||
|---|---|---|---|---|---|---|
| GIT 344-6 | Arcosphaeridium diversispinosum | Acrosphaeridium diversispinosum Uutela et Tynni, 1991 | 66 | Pirgu Stage | holotype | ||
| GIT 344-7 | Arcosphaeridium poriferum | Acrosphaeridium poriferum Uutela et Tynni, 1991 | 66 | Pirgu Stage | holotype |