Author:
Martin,F.
Year:
1989
Title:
Acritarchs. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors)
Reference:
Martin,F. (1989) Acritarchs. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) National Museum of Wales, Geological Series # 9 P. 207- 215
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Genus Species Country(Region) From To
Tylotopalla Tylotopalla sp USA Llandoverian
Tylotopalla Tylotopalla sp England Telychian Ludfordian
Tylotopalla Tylotopalla sp Wales Telychian Ludfordian
Tylotopalla Tylotopalla sp Norway Telychian
Tylotopalla Tylotopalla sp USSR(Ukrainian SSR) Wenlockian
Tylotopalla Tylotopalla sp Austria Wenlockian
Tylotopalla Tylotopalla sp Belgium Rhuddanian
Visbysphaera Visbysphaera dilatispinosa USA Wenlockian
Visbysphaera Visbysphaera dilatispinosa Wales Telychian Ludfordian
Visbysphaera Visbysphaera dilatispinosa England Telychian Ludfordian
Visbysphaera Visbysphaera dilatispinosa Norway Telychian
Visbysphaera Visbysphaera dilatispinosa Belgium Telychian Wenlockian
Visbysphaera Visbysphaera dilatispinosa Africa Silurian