Where: Alberta, Canada (56.3° N, 119.0° W: paleocoordinates 58.3° N, 71.6° W)
• coordinate based on nearby landmark
• basin-level geographic resolution
When: Dunvegan Formation, Cenomanian (100.5 - 93.9 Ma)
• STRATIGRAPHIC RELATIONS: The Dunvegan Formation is overlain conformably by the Kaskapau Formation in the Peace River area, except for an apparent hiatus near Watino, Alberta where the Dunveganoceras Zone seems to be missing. The contact is usually transitional, and where the basal unit of the Kaskapau becomes overly sandy the term Sakunka Member of the Dumvegan was suggested by Spieker (1921) for such beds in the Pine River area of British Columbia. The Dunvegan is underlain conformably and transitionally by shales of the Fort St. John Group, which are referred to as Sully and Cruiser formations in northeastern British Columbia and as the Shaftesbury Formation in the Peace River plains of Alberta. The Dunvegan grades laterally to the east into the marine Labiche Formation and to the south into the middle part of the Sunkay Member of the Blackstone Formation. AGE: Cenomanian, on the basis of ammonoid and bivalve biostratigraphy. STRATIGRAPHIC POSITION: List is representative of Dunvegan Fm.
• formation-level stratigraphic resolution
Environment/lithology: marine; poorly lithified, brown, gray, yellow sandstone
Size class: macrofossils
Preservation: mold/impression
Reposited in the NMC
Collection methods: surface (in situ),
• COLLECTOR: Multiple collectors. REPOSITORY: National Museum of Canada.
Primary reference: F. H. McLearn. 1926. Contributions to Canadian Palaeontology: New species from the Coloradoan of Lower Smokey and Lower Peace Rivers, Alberta. Canada Geological Survey 42:117-126 [A. Hendy/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 87568: authorized by Austin Hendy, entered by Austin Hendy on 19.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Bivalvia | |
Unio dowlingi freshwater mussel | |
Corbula pyriformis clam | |
Mactra sp. Linnaeus 1767 clam | |
Callista cf. orbiculata venus clam | |
Corbicula dowlingi McLearn 1926 clam | |
Tellina duneganensis tellin clam
Tellina (Moera) peaceriverensis tellin clam | |
"Psammosolen dunveganensis" = Solecurtus
"Psammosolen dunveganensis" = Solecurtus clam | |
Modiolus silentiensis McLearn 1926 mussel
Brachidontes cf. fulpensis mussel | |
Barbatia micronema clam | |
Inoceramus dunveganensis McLearn 1926 clam | |
Gastropoda | |
? Pachymelania sp. White 1895 snail | |
Brachydontes | |