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From
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To
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Geolocation
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Author - title
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Year
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| details | Cretaceous | Nd | Jain,R.K. Pre-Tertiary records of Salviniaceae. | 1971 | |
| details | Late Cretaceous | Montana | Hall,J.W. et al. A critical study of three Cretaceous Salviniaceous Magaspores | 1971 | |
| details | Late Cretaceous | North Dakota | Bergad,R.D. et al. A Cretaceous Azolla Massula with large Glochidia | 1971 | |
| original | Maastrichtian | Canada(Alberta) | Snead,R.G. Microfloral diagnosis of the Cretaceous-Tertiary boundary, Central Alberta. | 1969 |