Milk River #9 (GSC 3934) (Cretaceous of Canada)

Where: Alberta, Canada (49.1° N, 113.5° W)

• Paleocoordinates: 58.2° N, 69.1° W (Wright 2013)

• coordinate based on nearby landmark

When: Milk River Formation, Late/Upper Santonian (85.8 - 83.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

• In outcrop the Milk River Formation comprises three members: the Telegraph Creek, Virgelle, and Deadhorse Coulee (lower Eagle Formation equivalent). These members form a regressive succession from offshore marine to non marine coastal plain deposits.

•http://www.searchanddiscovery.net/documents/2006/06070rm_section%20_abs/abstracts/oconnell02.htm

• "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 35093: authorized by Bruce Tiffney, entered by Julia Fosdick on 03.11.2003

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Polypodiopsida
 Polypodiales - Polypodiidae
Onoclea hebridica
  -
Cladophlebis simplicima n. sp.
 Equisetales - Equisetidae
Equisetum sp.
Equisetum sp. Linnaeus 1753 horsetail
Equisetopsida
 Pinidae - Pinidae
Brachyphyllum douglasi n. sp.
Sphenopteridae
  - Sphenopteridae
Sphenopteris burlingi
Pinopsida
 Pinales - Taxaceae
Geinitzia formosa, Cephalotaxopsis heterophylla
Geinitzia formosa Heer 1871 yew
 Coniferales - Podocarpaceae
Elatocladus cf. Sequoia major, Elatocladus albertaensis
Elatocladus cf. Sequoia major Halle 1913 podocarp
Angiospermae
 Aquifoliales - Aquifoliaceae
? Ilex mammillata n. sp.
? Ilex mammillata n. sp. holly
 Saxifragales - Cercidiphyllaceae
Trochodendroides arctica
 Laurales - Lauraceae
Laurophyllum sp.
Laurophyllum sp. Göppert 1853 laurel
 Malpighiales - Salicaceae
Populites wickendeni n. sp.
 Fagales - Betulaceae
Alnus perantiqua