Where: Slope County, North Dakota (46.5° N, 103.9° W: paleocoordinates 52.1° N, 80.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: FUI zone, Ludlow Member (Fort Union Formation), Torrejonian (63.8 - 60.9 Ma)

• 80m to Hell Creek-Fort Union datum, 80m to K-T boundary based on calculations in Johnson (2002)

• bed-level stratigraphic resolution

Environment/lithology: mire or swamp; poorly lithified, carbonaceous shale

Size class: macrofossils

Preservation: adpression

Collection methods: quarrying, mechanical,

• Specimens located at Yale Peabody Museum

Primary reference: K. R. Johnson. 2002. Megaflora of the Hell Creek and lower Fort Union Formations in the western Dakotas: Vegetational response to climate change, the Cretaceous-Tertiary boundary event, and rapid marine transgression. The Hell Creek Formation and the Cretaceous-Tertiary boundary in the northern Great Plains: An integrated continental record of the end of the Cretaceous. 361:329-391 [S. Wing/S. Wing/K. Johnson]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 24953: authorized by Kirk Johnson, entered by Michele Reynolds on 23.08.2002

Creative Commons license: CC BY (attribution)