Also known as USGS 18584 (#40A Wa-F23)
Where: Southeast Fairbanks County, Alaska (62.5° N, 141.0° W: paleocoordinates 4.6° N, 73.0° 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 and calcareous shale
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collected by F.H. Moffit (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 40683: authorized by Austin Hendy, entered by Austin Hendy on 27.06.2004, edited by Wolfgang Kiessling
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Conucardia sp. n. sp.
Conucardia sp. n. sp. | |
Anthozoa | |
| |
| |
Echinoidea | |
Cidaroida indet. Claus 1880 pencil urchin | |
Bivalvia | |
Posidonia sp. Bronn 1828 oyster | |
Halobia sp. Bronn 1830 oyster | |
Lima aff. kimballi Smith 1927 file clam | |
Rhynchonellata | |
"Cyrtina" sp. Davidson 1858 | |
Spiriferina sp. d'Orbigny 1847
Spiriferina yukonensis Smith 1927 | |
Terebratulida indet.3 Waagen 1883 |