Also known as Loc. #11; 49ACh36
Where: North Slope County, Alaska (68.7° N, 163.1° W: paleocoordinates 76.6° N, 32.7° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Okpikruak Formation, Valanginian (139.8 - 132.9 Ma)
• Valanginian in age. Upper part of Torok or Kukpowruk Formation
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified shale and siltstone
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collections reposited in USGS and USNM collections. Collected by R.M. Chapman, 1949
Primary reference: R. W. Imlay. 1961. Characteristic lower Cretaceous megafossils from northern Alaska. United States Geological Survey Professional Paper 335 [A. Miller/A. Hendy/M. Clapham]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 44306: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2004
Creative Commons license: CC BY (attribution)