Sulcatosphaeridium
- Citations total:
- 4
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| original | Middle Ordovician | USSR(Yaroslav) | Umnova,N.I. et al. Acritarchs from the Yaroslavskoi series of the northern part of the Russian Platform | 1970 | |
| details | Early Paleozoic | Nd | Cramer,F.H. et al. Lower Paleozoic acritarchs. | 1979 | |
| details | Early Oligocene | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 | |
| details | Ordovician | Nd | Servais,T. An annotated bibliographical review of Ordovician acritarchs | 1997 |