Where: Alberta, Canada (49.4° N, 113.1° W: paleocoordinates 57.4° N, 85.5° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Twin Mountains Formation, Maastrichtian (72.1 - 66.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: fluvial; siltstone
•pond or overbank flood deposit
Size class: microfossils
Preservation: adpression
Primary reference: R. A. Stockey and G. W. Rothwell. 1997. The aquatic angiosperm Trapago angulata from the Upper Cretaceous (Maastrichtian) St. Mary River Formation of Southern Alberta. International Journal of Plant Sciences 158(1):83-94 [S. Wing/N. Jud]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 106007: authorized by Scott Wing, entered by Nathan Jud on 01.03.2011, edited by Rosemary Bush
Creative Commons license: CC BY (attribution)
Taxonomic list
Angiospermae | |
"Dicotyledonae indet." = Dicotyledoneae
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Cupressaceae indet. Gray 1822 cypress | |
Magnoliopsida | |
"Trapago angulata" = Quereuxia
"Trapago angulata" = Quereuxia | |
Gastropoda | |
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Hydropteris pinnata2 Rothwell and Stockey 1994 |