Also known as Lance Formation, Wyoming
Where: Niobrara County, Wyoming (43.2° N, 104.6° W: paleocoordinates 49.6° N, 79.5° W)
• coordinate stated in text
When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; siltstone
Size class: mesofossils
Preservation: mold/impression, original carbon
Collection methods: bulk,
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 34969: authorized by Bruce Tiffney, entered by Julia Fosdick on 21.10.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Ginkgoopsida | |
Ginkgo ? adiantoides Unger 1845 ginkgo | |
Sequoia dakotensis coast redwood | |
Angiospermae | |
Laurophyllum salicifolium laurel | |
Fraxinus leii ash | |
Viburnum montanum Knowlton 1900 honeysuckle | |
Cyperacites sp. Schimper 1870 sedge | |
Typha sp. Linnaeus 1753 bulrush | |
"Magnoliophyllum cordatum" = Magnoliphyllum
"Magnoliophyllum cordatum" = Magnoliphyllum magnolia | |
? Rhamnus minutus buckthorn | |
? Quercus viburnifolia Lesquereux 1878 oak | |
Dryophyllum subfalcatum Lesquereux 1875 | |
? Apeibopsis discolor Lesquereux 1872 | |
Vitis stantoni, "Viburnum marginatum" = Cissus marginata
Vitis stantoni grapevine
"Viburnum marginatum" = Cissus marginata Lesquereux 1872 | |
Dombeyopsis | |
Dombeyopsis trivialis Lesquereux 1872 |