Also known as Black Hills
Where: Wyoming (44.7° N, 104.2° W: paleocoordinates 43.4° N, 53.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Cretaceous Formation, Early/Lower Cretaceous (145.0 - 100.5 Ma)
• Due to its 19th century date of publication, the "Cretaceous Formation" is the highest stratigraphic resolution for this collection.
• formation-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; shale
Size classes: macrofossils, mesofossils
Preservation: mold/impression, adpression, original carbon
Collection methods: bulk,
Primary reference: L.F. Ward. 1899. The Cretaceous formation of the Black Hills as as indicated by the fossil plants. Cretaceous Formation of the Black Hills [B. Tiffney/J. Fosdick/B. Tiffney]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 32033: authorized by Bruce Tiffney, entered by Julia Fosdick on 01.06.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Polypodiopsida | |
"Thyrsopteris dentifolia n. sp." = Onychiopsis psilotoides, "Thyrsopteris pecopteroides" = Onychiopsis nervosa, "Thyrsopteris brevifolia" = Onychiopsis brevifolia
"Thyrsopteris dentifolia n. sp." = Onychiopsis psilotoides Stokes and Webb 1824
"Thyrsopteris pecopteroides" = Onychiopsis nervosa Fontaine 1889
"Thyrsopteris brevifolia" = Onychiopsis brevifolia Fontaine 1889 |