Also known as Kukpowruk River/Cape Lisburne floras
Where: western North Slope County, Alaska (69.5° N, 162.7° 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: "floodplain"; gray, argillaceous siltstone and coal
•by fine-grained sandstone channel fills and some thin (<0.5 m)
•coals. Ironstone nodules weathering out from the siltstones contain
•a leaf flora with Cephalotaxopsis, and possible Podozamites or Desmiophyllum.
•Ironstones associated with the coals are particularly rich in
•Podozamites/Desmiophyllum. A single, small, palmately-veined but
•fragmented angiosperm was also found. Siltstones are heavily
•rooted with possible Equisetites and some ironstone internal moulds
•of freshwater bivalves are present.
•Interpretation. Floodplain interfluves with channels, ponds and
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 34390: authorized by Dana Royer, entered by Dana Royer on 28.08.2003
Creative Commons license: CC BY (attribution)