Also known as Kukpowruk River/Cape Lisburne floras
Where: western North Slope County, Alaska (69.3° N, 162.6° W: paleocoordinates 80.0° N, 92.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Kukpowruk Formation, Albian (113.0 - 100.5 Ma)
• lower to middle Albian
• group of beds-level stratigraphic resolution
Environment/lithology: "floodplain"; brown, gray, silty mudstone and burrowed, fine-grained sandstone
•incipient nodular texture containing abundant large Podozamites
•and long and short Pityphyllum leaves, Birisia fronds, and Equisetites.
•This passes up into coals with ironstone nodules. The ironstones
•contain abundant Podozamites. These pass up into sandstones
•with burrows. Long-leafed Pityophyllum occurred in fine-grained
•sandstones below the siltstone. Sample 96 RAS 116 represents
•Pityophyllum from the sandstones.
•Interpretation. Vegetated floodplain environment.
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 34371: authorized by Dana Royer, entered by Dana Royer on 28.08.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
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Podozamites spp. Braun 1843 podocarp occurs abundantly in siltstone (large leaves); also occurs in ironstones within coals
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| Polypodiopsida | |
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| Ginkgoopsida | |
| Gnetopsida | |
"Pityophyllum ex gr. nordenskioldii" = Pityophyllum nordenskioeldi
"Pityophyllum ex gr. nordenskioldii" = Pityophyllum nordenskioeldi Heer 1899 occurs in mudstone (long and short leaves) and sandstone
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