Bad Heart Formation (GSC 5188) (Cretaceous of Canada)

Where: Alberta, Canada (55.7° N, 120.1° W: paleocoordinates 58.0° N, 73.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bad Heart Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; sandstone

• "The strata consist generally of alternating series of sandstones and shales with all gradients between the two....contains clay ironstone concretions, large plant stems and tree trunk imprints and casts, ripple markings, worm borings... carbonaceous fragments and coal seams..."

Size class: macrofossils

Preservation: mold/impression, adpression, original carbon

Reposited in the GSC

Collection methods: bulk,

• For futher modifications, refer to D.R. Crabtree. 1987. Angiosperms of the Northern Rocky Mountain: Albian to Campanian (Cretaceous) megafossil floras. Annals of the Missouri Botanical Garden 74:707-747

Primary reference: W. A. Bell. 1962. Upper Cretaceous floras of the Dunvegan, Bad Heart, and Milk River Formations of Western Canada. Geological Survey of Canada 94:1-76 [B. Tiffney/J. Fosdick/J. Fosdick]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 35072: authorized by Bruce Tiffney, entered by Julia Fosdick on 29.10.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rhamnales - Rosidae
Vitis sp. Linnaeus grapevine
 Saxifragales - Cercidiphyllaceae