Also known as USGS 18352(#40A Wa-F2)
Where: Valdez-Cordova County, Alaska (62.4° N, 143.0° W: paleocoordinates 5.0° N, 73.9° W)
• coordinate based on nearby landmark
• 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
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collected by R.G. Wayland (1940)
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 40680: authorized by Austin Hendy, entered by Austin Hendy on 27.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
? Halorella sp. Bittner 1884 |