Azolla colwellensis

Citations total:
link From To Geolocation Author - title Year
original Late Eocene England(Isle of Wight) Collinson,M.E. A new multiple-floated Azolla from the Eocene of Britian with a brief review of the genus. 1980
details Bartonian Priabonian Worldwide Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. 1989
details Late Eocene England Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores 1990