Author:
Sweet,A.R.;Hills,L.V.
Year:
1971
Title:
Evolution of Azolla and Azollopsis during the Upper Cretaceous and Lower Tertiary.
Reference:
Sweet,A.R. et al. (1971) Evolution of Azolla and Azollopsis during the Upper Cretaceous and Lower Tertiary. American Journal of Botany Vol. 50 # 5 P. 473- 473
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Genus Species Country(Region) From To
Azolla Azolla Canada(Alberta) Cretaceous Early Paleocene
Azolla Azolla conspicua Canada(Alberta) Cretaceous Early Paleocene
Azollopsis Azollopsis Canada(Alberta) Cretaceous Early Paleocene
Azollopsis Azollopsis sp Canada(Alberta) Cretaceous Early Paleocene