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
Trachysphaeridium Trachysphaeridium textuplicatum Nd Late Ordovician
Trachysphaeridium Trachysphaeridium timofeevii Nd Late Riphean Vendian
Trachysphaeridium Trachysphaeridium undulatum Nd Nd
Trachysphaeridium Trachysphaeridium uspenskyi USSR(Urals) Silurian Middle Devonian
Trachysphaeridium Trachysphaeridium uspenskyi Nd Early Ordovician Middle Ordovician
Trachysphaeridium Trachysphaeridium uspenskyi Nd Early Ordovician Middle Ordovician
Trachysphaeridium Trachysphaeridium vetternii Nd Riphean
Trachysphaeridium Trachysphaeridium vidalii Nd Nd
Trachysphaeridium Trachysphaeridium wangjiawanense Nd Sinian
Trachysphaeridium Trachysphaeridium yimenense Nd Late Precambrian
Trachysphaeridium Trachysphaeridium yunnanense Nd Late Precambrian
Trachytriletes Trachytriletes Nd Nd
Trachytriletes Trachytriletes ancoraeformis Nd Early Hauterivian
Trachytriletes Trachytriletes angiopteroides Nd Jurassic Cretaceous
Trachytriletes Trachytriletes arcticus Nd Devonian
Trachytriletes Trachytriletes asper Nd Late Namurian
Trachytriletes Trachytriletes asperatus Nd Carboniferous