Author:
Achab,A.;Bertrand,R.;Grootel,G.Van
Year:
1992
Title:
Chitinozoan contribution to the Ordovician and Lower Silurian paleobiogeography.
Reference:
Achab,A. et al. (1992) Chitinozoan contribution to the Ordovician and Lower Silurian paleobiogeography. Journal of Geology Vol. 100 # 5 P. 621- 629
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Genus Species Country(Region) From To
Velatachitina Velatachitina sp Africa Early Ordovician