Also known as Marshall's Turtle; KJ9147;KJ9318;KJ9746;KJ9851
Where: Slope County, North Dakota (46.3° N, 103.9° W: paleocoordinates 52.5° N, 77.3° W)
• coordinate stated in text
• small collection-level geographic resolution
When: HCIII zone, Hell Creek Formation, Lancian (70.6 - 66.0 Ma)
• -2.2m to Hell Creek-Fort Union contact datum, -4.795m to K-T boundary based on calculations in Johnson (2002)
• bed-level stratigraphic resolution
Environment/lithology: crevasse splay; poorly lithified siltstone
Size class: macrofossils
Preservation: adpression
Reposited in the DMNH
Collection methods: quarrying, mechanical,
• Specimens located at Denver Museum of Nature & Science and 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 25911: authorized by Kirk Johnson, entered by Michele Reynolds on 28.09.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
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Equisetopsida | |
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Pteridopsida | |
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Cycadopsida | |
"Nilssonia yukonensis" = Nilsonia
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Angiospermae | |
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"Dicotyledonae "HC280"" = Dicotyledoneae, "Dicotyledonae "HC321"" = Dicotyledoneae, "Dicotyledonae "HC337"" = Dicotyledoneae
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"Magnoliidae "HC043"" = Magnoliid
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Pinopsida | |
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