Also known as Lance Formation, Wyoming
Where: Niobrara County, Wyoming (43.2° N, 104.6° W: paleocoordinates 47.9° N, 69.8° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Cretaceous Formation, Late/Upper Cretaceous (100.5 - 66.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: terrestrial; lithified, brown, gray siltstone
Size class: mesofossils
Preservation: mold/impression, original carbon
Primary reference: E. Dorf. 1942. Upper Cretaceous floras of the Rocky Mountain region; Flora of the Lance Formation at its type locality, Niobrara County, Wyoming. Contributions to Palaeontology [B. Tiffney/J. Fosdick/J. Fosdick]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 34971: authorized by Bruce Tiffney, entered by Julia Fosdick on 21.10.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Sequoia dakotensis coast redwood | |
Angiospermae | |
"Carpites verrucosus" = Porosia verrucosa
"Carpites verrucosus" = Porosia verrucosa Lesquereux 1878 | |
Typha sp. Linnaeus 1753 bulrush | |
Fraxinus leii ash | |
? Celastrus taurinensis Ward 1885 bittersweet | |
Dryophyllum subfalcatum Lesquereux 1875 | |
? Apeibopsis discolor Lesquereux 1872 | |
Pistacia eriensis cashew | |
Carpites | |