Where: North Slope County, Alaska (70.0° N, 151.6° W: paleocoordinates 82.3° N, 127.7° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Kogosukruk Tongue Member (Prince Creek Formation), Early/Lower Maastrichtian (70.6 - 66.0 Ma)
• possibly Edmontonian based on "radiometric age determinations (both K/Ar and 40Ar/39Ar)... at least 69 Ma old"
• bed-level stratigraphic resolution
Environment/lithology: coarse channel fill; pebbly, intraclastic sandstone
Size classes: macrofossils, mesofossils
Collected by W. Clemens, A. Fiorillo in 1988–1989, 1993, 2005–2007, 1009, 2012, 2014
Collection methods: bulk, sieve,
• "fauna was obtained by underwater screening" (Clemens 2003)
Primary reference: W. A. Clemens. 1991. A latest Cretaceous, high paleolatitude mammalian fauna from the North Slope of Alaska. In Z. Kielan-Jaworowska, N. Heintz, & H. A. Nakrem (eds.), Fifth Symposium on Mesozoic Terrestrial Ecosystems and Biota, Extended Abstracts. Contributions from the Paleontological Museum, Unviersity of Oslo 364:15-16 [M. Carrano/M. Carrano]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 14495: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Matthew Carrano and Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Gnathostomata | |
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Reptilia | |
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Mammalia | |
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Unnuakomys hutchisoni n. gen. n. sp.5
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Gnathostomata | |
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