Where: Slope County, North Dakota (46.4° N, 104.0° W: paleocoordinates 52.3° N, 79.1° W)
• coordinate stated in text
• small collection-level geographic resolution
When: FUI zone, Ludlow Member (Fort Union Formation), Puercan (66.0 - 63.3 Ma)
• 1m to Hell Creek-Fort Union contact datum, 0.04m to K-T boundary based on calculations in Johnson (2002)
• bed-level stratigraphic resolution
Environment/lithology: pond; poorly lithified mudstone
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 25471: authorized by Kirk Johnson, entered by Michele Reynolds on 12.09.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
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