Polypodiopsida - Polypodiales - Polypodiidae
Full reference: F. H. Knowlton. 1899. Fossil Flora of the Yellowstone National Park. USGS Monograph Series 32(2)
Belongs to Dryopteris according to F. H. Knowlton 1919
See also Knowlton 1899
Sister taxa: Dryopteris arguta, Dryopteris civica, Dryopteris cladophleboides, Dryopteris coloradensis, Dryopteris gleichenoides, Dryopteris indica, Dryopteris kennerlyi, Dryopteris kootaniensis, Dryopteris lakesii, Dryopteris lloydii, Dryopteris meeteetseana, Dryopteris montanensis, Dryopteris nigricans, Dryopteris polypodioides, Dryopteris scansa, Dryopteris serrata, Dryopteris seymouriensis, Dryopteris xantholithensis
Distribution: found only at Yellowstone River, 1 mile below Elk Creek, 1 mile above Hellroaring Creek (Eocene of Wyoming)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.