Also known as Kukpowruk River/Cape Lisburne floras
Where: western North Slope County, Alaska (69.3° N, 162.4° W: paleocoordinates 79.0° N, 95.5° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Corwin Formation, Albian to Albian (113.0 - 93.9 Ma)
• middle Albian to Cenomanian
• group of beds-level stratigraphic resolution
Environment/lithology: crevasse splay; concretionary, brown, gray, silty mudstone and fine-grained, gray, yellow sandstone
•nodules, coals, and fine-grained (rarely medium-grained) grey/
•yellow sandstones. Phoenicopsis is abundant throughout and is the
•only common plant fossil in the sandstones. Very large-leafed
•Ginkgo ex gr. adiantoides, Desmiophyllum magnum, Birisia and
•Pagiophyllum triangulare occur in the mudstones.
•Interpretation. Channel sands and near-channel crevasse splay sands
•alternating with interfluve floodplain silts and muds with occasional
•mires.
Size class: macrofossils
Collection methods: quarrying,
• Material stored at the Earth Sciences Department, The Open University, collection # 96 RAS.
Primary reference: R. A. Spicer and A. B. Herman. 2001. The Albian-Cenomanian flora of the Kukpowruk River, western North Slope, Alaska: stratigraphy, palaeofloristics, and plant communities. Cretaceous Research 22:1-40 [D. Royer/D. Royer/D. Royer]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 34386: authorized by Dana Royer, entered by Dana Royer on 28.08.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Polypodiopsida | |
Onychiopsis cf. psilotoides Stokes and Webb 1824 | |
Coniopteris ex gr. arctica scaly tree fern | |
Ginkgoopsida | |
| |
| |
Equisetopsida | |
| |
Gnetopsida | |
"Pityophyllum ex gr. staratschinii" = Pityophyllum staratschini
"Pityophyllum ex gr. staratschinii" = Pityophyllum staratschini Nathorst 1899 | |
Hepaticae | |
Thallites ex gr. arctica liverwort | |
Desmiophyllum sp. Lesquereux 1878 | |
Podozamites ex gr. eichwaldii podocarp
Podozamites spp. Braun 1843 podocarp | |
Pseudocycas sp. Nathorst 1907 |