Author:
Richardson,J.B.;Edwards,D.
Year:
1989
Title:
Sporomorphs and plant megafossils. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors)
Reference:
Richardson,J.B. et al. (1989) Sporomorphs and plant megafossils. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) National Museum of Wales, Geological Series # 9 P. 216- 226
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Genus Species Country(Region) From To
Strophomorpha Strophomorpha ovata Nd Ashgillian Rhuddanian
Synorisporites Synorisporites sp Nd Early Pridolian
Tetrahedraletes Tetrahedraletes medinensis Nd Ashgillian Rhuddanian
Tetrahedraletes Tetrahedraletes medinensis Wales(Carmarthenshire) Early Llandoverian
Vermiculatisphaera Vermiculatisphaera obscura New York Ashgillian Rhuddanian