Where: British Columbia, Canada (58.7° N, 124.3° W: paleocoordinates 28.4° N, 34.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: hayesi ammonoid zone, Toad Formation, Bithynian (247.2 - 242.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Collected by F.H. McLearn in 1944; reposited in the GSC
Primary reference: F. H. McLearn. 1969. Middle Triassic (Anisian) ammonoids from northeastern British Columbia and Ellesmere Island. Geological Survey of Canada Bulletin 170:1-90 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 137068: authorized by Matthew Clapham, entered by Matthew Clapham on 10.12.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
"Gymnotoceras helle n. sp." = Anagymnotoceras varium
"Gymnotoceras helle n. sp." = Anagymnotoceras varium McLearn 1948 ceratite |