Author:
Volkova,N.A.
Year:
1997
Title:
Paleogeography of phytoplankton at Cambrian-Ordovician boundary
Reference:
Volkova,N.A. (1997) Paleogeography of phytoplankton at Cambrian-Ordovician boundary Paleontologicheskii Zhurnal (Paleontological Journal) Vol. 1997 # 2 P. 13- 19
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Genus Species Country(Region) From To
Vulcanisphaera Vulcanisphaera imparilis Iran Early Tremadocian
Vulcanisphaera Vulcanisphaera imparilis Africa(N.Africa) Early Tremadocian
Vulcanisphaera Vulcanisphaera imparilis Argentina Early Tremadocian