Polypodiopsida - Polypodiaceae
Alternative combination: Hymenopteris psilotoides
Synonyms: Thyrsopteris angustifolia Fontaine 1889, Thyrsopteris dentifolia Fontaine 1899, Thyrsopteris insignis Fontaine 1889, Thyrsopteris microphylla Fontaine 1889
Belongs to Onychiopsis according to F. H. Knowlton 1919
See also Andrews 1970 and Lakhanpal et al. 1976
Sister taxa: Onychiopsis brevifolia, Onychiopsis elongata, Onychiopsis goepperti, Onychiopsis latiloba, Onychiopsis nervosa, Onychiopsis paradoxus
Ecology: "photoautotroph"
Distribution:
• Cretaceous of Canada (3: Alberta, British Columbia collections), Spain (1), United States (3: Alaska, Kansas, Wyoming)
• Jurassic to Cretaceous of India (1)
Total: 8 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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