Also known as Kukpowruk River/Cape Lisburne floras
Where: western North Slope County, Alaska (69.5° N, 162.8° W: paleocoordinates 79.2° N, 95.4° 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: wet floodplain; concretionary, gray, argillaceous siltstone
•downstream. Grey bentonitic siltstone with iron-claystone nodules
•forms the axis of a syncline. The ironstones preserve ginkgoes (most
•small and dissected but some very large), Podozamites, Desmiophyl-lum,
•ferns and abundant Cephalotaxopsis and numerous an-giosperms.
•These Cretaceous sediments are overlain by brown,
•poorly consolidated gravels of post-Cretaceous age.
•Interpretation. Predominantly an interfluve environment with over-bank
•sediments and ponds, moderately influenced by periodic ash
•falls.
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 34623: authorized by Dana Royer, entered by Dana Royer on 12.09.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
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| Ginkgoopsida | |
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Ginkgo ex gr. adiantoides Unger 1845 ginkgo most small and dissected but some very large; occurs in ironstones within siltstones
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| Angiospermae | |
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| Pinopsida | |
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| Polypodiopsida | |
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