Author:
Hall,J.W.
Year:
1970
Title:
A new section of Azolla.
Reference:
Hall,J.W. (1970) A new section of Azolla. Taxon Vol. 19 # 2 P. 302- 303
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Genus Species Country(Region) From To
Azolla Azolla geneseana Canada Nd
Azolla Azolla primaeva Canada Eocene
Azolla Azolla simplex Montana Cretaceous
Simplicispora Simplicispora Canada Eocene