KJ9312 (DMNH 897) (Cretaceous of the United States)

Also known as new Bobcat channel, KJ9312, 9743

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

• -47m to Hell Creek-Fort Union contact datum, -47.75m 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 48233: 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 "HC262"" = Dicotyledoneae, "Dicotyledonae "HC296"" = Dicotyledoneae
"Dicotyledonae "HC262"" = Dicotyledoneae
HC262
"Dicotyledonae "HC296"" = Dicotyledoneae
HC296
 Malvales - Tiliaceae
 Celastrales - Celastraceae
Celastrus taurenensis bittersweet
HC94
 Fagales - Nothofagaceae
Dryophyllum subfalcatum Lesquereux 1875
HC49
 Proteales - Platanaceae
Platanaceae "HC98" Lestiboudois 1826
HC98
 Saxifragales - Cercidiphyllaceae
aff. Cercidiphyllum "HC124" Siebold and Zuccarini 1846 katsura
HC124
 Trochodendrales -
Trochodendrales "HC73" Takhtajan 1981
HC73
 Coniferales - Cupressaceae
Taxodium olrikii cypress
HC71
Sequoia "HC70" Endlicher 1847 coast redwood
HC70
Metasequoia occidentalis Chaney 1951 dawn redwood
FU3
Hydropteris pinnata
  - Hydropteridiaceae
Hydropteris pinnata Rothwell and Stockey 1994
Rothwell and Stocky; HC129