Also known as USGS 16086(#31A M-F16)
Where: Valdez-Cordova County, Alaska (62.6° N, 143.3° W: paleocoordinates 5.2° N, 73.9° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Late/Upper Triassic (237.0 - 201.4 Ma)
• Limestone, massive and crystalline, overlain by thin-bedded limestone; maximum known thickness is 1200 feet; includes some black shale, as shales on Snag River
• bed-level stratigraphic resolution
Environment/lithology: marine; limestone and calcareous shale
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collected by Moffit (1931)
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 40685: authorized by Austin Hendy, entered by Austin Hendy on 27.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Monotis (Pseudomonotis) subcircularis Gabb 1864 scallop |