Author:
Chauvel,J.J.;Schopf,J.W.
Year:
1978
Title:
Late Precambrian microfossils from Brioverian Cherts and Limestones of Brittany and Normandy, France.
Reference:
Chauvel,J.J. et al. (1978) Late Precambrian microfossils from Brioverian Cherts and Limestones of Brittany and Normandy, France. Nature Vol. 275 # 5681 P. 640- 642
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Genus Species Country(Region) From To
Microconcentrica Microconcentrica France(Normandie) Late Precambrian
Sphaerocongregus Sphaerocongregus variabilis France(Normandie)
Symplassosphaeridium Symplassosphaeridium France(Normandie) Late Precambrian