KJ8403 (Paleocene of the United States)

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 (63.3 - 61.7 Ma)

• 50m to Hell Creek-Fort Union contact datum, 50m 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 24962: authorized by Kirk Johnson, entered by Michele Reynolds on 23.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Magnoliopsida
  -
Dicotylophyllum anomalum Ward 1887
FU029
Angiospermae
  -
"Dicotyledonae "FU012"" = Dicotyledoneae
"Dicotyledonae "FU012"" = Dicotyledoneae
FU012
Dicotyledoneae
 Rosidae - Rosidae
Rosidae "FU023" Takhtajan 1967
FU023
Angiospermae
 Trochodendrales - Trochodendraceae
Nordenskioldia borealis Heer 1870
FU044
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum genetrix Newberry 1868 katsura
Hickey; FU005
 Proteales - Platanaceae
Platanus raynoldsii Newberry 1868 plane tree
FU016
 Ranunculales - Menispermaceae
Cocculus flabella Wolfe 1966
FU043
 Coniferales - Cupressaceae
Glyptostrobus europaeus Brongniart 1833 Chinese swamp cypress
FU004
Metasequoia occidentalis Chaney 1951 dawn redwood
FU003
Pteridopsida
 Filicales -
Polypodiopsida
 Hymenophyllales - Polypodiidae