KJ9745 (DMNH 2097) (Cretaceous of the United States)

Also known as Terry's HCIIa site, KJ9745, 9853

Where: Slope County, North Dakota (46.3° N, 103.9° W: paleocoordinates 52.6° N, 77.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: HCIIa zone, Hell Creek Formation, Lancian (70.6 - 66.0 Ma)

• -28.8m to Hell Creek-Fort Union contact datum, -31.395m to K-T boundary based on calculations in Johnson (2002)

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; poorly lithified sandstone

Size class: macrofossils

Preservation: adpression

Reposited in the DMNH

Collection methods: quarrying, mechanical,

• Specimens located at Denver Museum of Nature & Science

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 48212: authorized by Kirk Johnson, entered by Kirk Johnson on 15.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Erlingdorfia montana
(Brown) Johnson; HC57-64
Angiospermae
  -
"Dicotyledonae "HC254"" = Dicotyledoneae, "Dicotyledonae "HC260"" = Dicotyledoneae, "Dicotyledonae "HC267"" = Dicotyledoneae, "Dicotyledonae "HC289"" = Dicotyledoneae, "Dicotyledonae "HC290"" = Dicotyledoneae, "Dicotyledonae "HC306"" = Dicotyledoneae, "Dicotyledonae "HC307"" = Dicotyledoneae, "Dicotyledonae "HC308"" = Dicotyledoneae, "Dicotyledonae "HC309"" = Dicotyledoneae, "Dicotyledonae "HC310"" = Dicotyledoneae, "Dicotyledonae "HC305"" = Dicotyledoneae
"Dicotyledonae "HC254"" = Dicotyledoneae
HC254
"Dicotyledonae "HC260"" = Dicotyledoneae
HC260
"Dicotyledonae "HC267"" = Dicotyledoneae
HC267
"Dicotyledonae "HC289"" = Dicotyledoneae
HC289
"Dicotyledonae "HC290"" = Dicotyledoneae
HC290
"Dicotyledonae "HC306"" = Dicotyledoneae
HC306
"Dicotyledonae "HC307"" = Dicotyledoneae
HC307
"Dicotyledonae "HC308"" = Dicotyledoneae
HC308
"Dicotyledonae "HC309"" = Dicotyledoneae
HC309
"Dicotyledonae "HC310"" = Dicotyledoneae
HC310
"Dicotyledonae "HC305"" = Dicotyledoneae
HC305
 Rosales - Rhamnaceae
Rhamnus cleburni Lesquereux 1872 buckthorn
HC62
 Fagales - Nothofagaceae
Dryophyllum subfalcatum Lesquereux 1875
HC49
 Proteales - Platanaceae
Platanaceae "HC151" Lestiboudois 1826
HC151
 Saxifragales - Cercidiphyllaceae
 Mesangiosperms - Araceae
Pistia corrugata Lesquereux 1874 water cabbage
HC77
 Magnoliid - Magnoliidae
"Magnoliidae "HC66"" = Magnoliid
"Magnoliidae "HC66"" = Magnoliid Jud 2011
HC66
 Laurales -
? Laurales "HC32" Jussieu 1820
HC32
 Coniferales -
Leepierceia preartocarpoides
  -
Leepierceia preartocarpoides Johnson 1996
(Brown) Johnson; HC86