Author:
Hall,J.W.
Year:
1969
Title:
Studies on fossil Azolla
Reference:
Hall,J.W. (1969) Studies on fossil Azolla American Journal of Botany Vol. 56 # 10 P. 1173- 1180
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Genus Species Country(Region) From To
Azolla Azolla circinata Montana Late Cretaceous
Azolla Azolla montana Montana Late Cretaceous
Azolla Azolla simplex sp. nov. Montana Campanian
Azollopsis Azollopsis coccoides Montana Late Cretaceous
Azollopsis Azollopsis tomentosa Montana Late Cretaceous
Parazolla Parazolla Montana Campanian
Parazolla Parazolla heterotricha sp. nov. Montana Campanian