Author:
Fensome,R.A.;Williams,G.L.;Barss,M.S.;Freeman,J.M.;Hill,J.M.
Year:
1990
Title:
Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa.
Reference:
Fensome,R.A. et al. (1990) Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. American Association of Stratigraphic Palynologists, Contributions Series # 25 P. 1- 771
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Genus Species Country(Region) From To
Ordovicidium Ordovicidium elegantulum Nd Llandeilian
Ordovicidium Ordovicidium fissum Nd Late Caradocian
Ordovicidium Ordovicidium gracile Nd Late Ordovician
Ordovicidium Ordovicidium groetlingboense Nd Middle Ordovician
Ordovicidium Ordovicidium heteromorphicum Nd Middle Ordovician
Ordovicidium Ordovicidium heteromorphicum Finland Ordovician
Ordovicidium Ordovicidium heteromorphicum Nd Middle Ordovician
Ordovicidium Ordovicidium majorfurcatum Nd Middle Ordovician
Ordovicidium Ordovicidium majorvesiculum Sweden Middle Ordovician
Ordovicidium Ordovicidium nudum Nd Middle Ordovician
Ornatasphaera Ornatasphaera Nd Nd
Ornatasphaera Ornatasphaera elliptica Nd Late Quaternary
Ornatasphaera Ornatasphaera globata Nd Late Quaternary
Ornatasphaera Ornatasphaera reticulata Nd Late Quaternary
Orthosphaeridium Orthosphaeridium Nd Nd
Orthosphaeridium Orthosphaeridium abbreviatum Nd Late Llanvirnian
Orthosphaeridium Orthosphaeridium bispinosum Nd Onnian