Author:
Millay,M.A.;Taylor,T.N.
Year:
1979
Title:
Paleozoic seed fern pollen organs.
Reference:
Millay,M.A. et al. (1979) Paleozoic seed fern pollen organs. The Botanical Review Vol. 45 # 3 P. 301- 375
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Genus Species Country(Region) From To
Thuringia Thuringia Nd Early Permian
Vesicaspora Vesicaspora Nd Middle Pennsylvanian Late Pennsylvanian
Whittleseya Whittleseya Nd Late Mississippian Permian
Zimmermannitheca Zimmermannitheca Nd Namurian