Also known as Kukpowruk River/Cape Lisburne floras
Where: western North Slope County, Alaska (69.3° N, 162.8° W: paleocoordinates 79.1° N, 96.2° 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, silty mudstone
•elliptical in cross section, 23 cm (short axis)–34 cm (long axis)
•diameter. The trunk was weathered out on the river bank in three
•pieces. The structure was well-preserved with a coaly bark. The
•trunk was apparently derived from a dark grey, weathering to
•orange/brown, silty mudstone containing large-leafed Podozamites
•and Equisetites. Specimen 96 RAS 111 is a sample of wood from the
•outer edge of the trunk at the apex of the long cross-sectional axis.
•Sample 96 RAS 112 represents Podozamites from the mudstones.
•Interpretation. Floodplain sediments supporting a wooded vegetation
•rich in Podozamites. The strong association at this and the
•previous locality between large logs and Podozamites leaves strongly
•suggests that plants producing Podozamites possessed a straight
•trunk at least 10 m in height.
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 34367: authorized by Dana Royer, entered by Dana Royer on 28.08.2003
Creative Commons license: CC BY (attribution)