Also known as USGS 18084(#38A M-F3)
Where: Southeast Fairbanks County, Alaska (63.2° N, 142.4° W: paleocoordinates 38.3° N, 60.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Late/Upper Triassic (237.0 - 201.4 Ma)
• Specifically: "limestone boulder in conglomerate". Limestone, massive and crystalline, overlain by thin-bedded limestone; maximum known thickness is 1200 feet; includes some black shale.
• bed-level stratigraphic resolution
Environment/lithology: marine; limestone
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collected by Moffit (1938)
Primary reference: F.H. Moffit. 1954. Geology of the eastern part of the Alaska Range and adjacent area. United States Geological Survey Professional Paper 989(D) [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 40676: authorized by Austin Hendy, entered by Austin Hendy on 27.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Arcestes sp. Suess 1865 ceratite | |
"Trachyceras (Protrachyceras) cf. beckeri" = Spirogmoceras shastense
"Trachyceras (Protrachyceras) cf. beckeri" = Spirogmoceras shastense Smith 1904 ceratite |