†Dennstaedtia americana Knowlton 1910 (fern)
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Polypodiopsida - Polypodiales - Polypodiidae
Synonyms: Asplenium tenerum Lesquereux 1883, Sphenopteris blomstrandi Heer 1868
Belongs to Dennstaedtia according to F. H. Knowlton 1919
Sister taxa: Dennstaedtia concava, Dennstaedtia fremonti, Dennstaedtia rajmahalensis, Dennstaedtia sorimarginata
Distribution:
• Eocene of United States (2: Idaho collections)
• Paleocene of Canada (3: Saskatchewan), United States (8: Colorado, North Dakota, Wyoming)
Total: 13 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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