Kukpowruk River 98-20 (Cretaceous to of the United States)

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: pond; concretionary, gray mudstone

• Description. Approximately 300 m along strike and down river from

•locality 98-19 the same unit hosts ironstone nodules containing

•Podozamites, Desmiophyllum, Cephalotaxopsis, Taeniopteris,and

•ginkgoes that are highly dissected, some with very long lobes.

•Interpretation. Channels and interfluve ponds.

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 34622: authorized by Dana Royer, entered by Dana Royer on 12.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Cephalotaxopsis sp.
occurs in ironstones within mudstones
Pinopsida
 Pinales - Podocarpaceae
Podozamites spp. Braun 1843
occurs in ironstones within mudstones
 Pinales -
? Desmiophyllum sp. Lesquereux 1878
occurs in ironstones within mudstones
Ginkgoopsida
 Ginkgoales - Ginkgoaceae
Ginkgo ex gr. concinna ginkgo
highly dissected, some with very long lobes; occurs in ironstones within mudstones
 Pentoxylales - Pentoxylaceae
? Taeniopteris sp. Brongniart 1828
occurs in ironstones within mudstones