Where: Alaska (57.7° N, 155.7° W: paleocoordinates 30.6° N, 89.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Shelikof Formation, Callovian (166.1 - 163.5 Ma)
• Shelikof Formation, middle member.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Collected by T.W. Stanton in 1904; reposited in the USNM
Primary reference: R. W. Imlay. 1953. Callovian (Jurassic) ammonites from the United States and Alaska Part 2. Alaska Peninsula and Cook Inlet regions. United States Geological Survey Professional Paper 249-B:41-108 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 158937: authorized by Matthew Clapham, entered by Matthew Clapham on 23.07.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Cadoceras tenuicostatum, "Pseudocadoceras grewingki" = Cadoceras (Pseudocadoceras) grewingki, Pseudocadoceras petelini, Cadoceras doroschini
Cadoceras tenuicostatum Imlay 1953 ammonite
"Pseudocadoceras grewingki" = Cadoceras (Pseudocadoceras) grewingki Pompeckj 1900 ammonite
Pseudocadoceras petelini Pompeckj 1900 ammonite
Cadoceras doroschini Eichwald 1871 ammonite |