Where: Alberta, Canada (53.0° N, 117.3° W: paleocoordinates 52.4° N, 61.3° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Nikanassin Formation, Neocomian to Neocomian (145.0 - 125.0 Ma)
• correlative with the Kootenay Formation
• formation-level stratigraphic resolution
Environment/lithology: coastal; sandstone and shale
Size class: macrofossils
Collection methods: surface (float), surface (in situ),
Primary reference: W. A. Bell. 1956. Lower Cretaceous Floras of Western Canada. Geological Survey of Canada Memoir 285 (2528)1-153 [A. Rees/D. Sunderlin/D. Sunderlin]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 24847: authorized by Allister Rees, entered by Dave Sunderlin on 21.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Gnetopsida | |
Cycadopsida | |
"Nilssonia nigracollensis" = Nilsonia
"Nilssonia nigracollensis" = Nilsonia cycads | |
Ginkgoopsida | |
Ginkgo nana Dawson 1885 ginkgo
Ginkgo pluripartita Heer 1876 ginkgo | |
Podozamites lanceolatus Lindley and Hutton 1840 podocarp | |
Polypodiopsida | |
Coniopteris brevifolia scaly tree fern | |