Also known as Sando et al. Amsden Creek Loc.65
Where: Sheridan County, Wyoming (44.9° N, 107.3° W: paleocoordinates 4.5° N, 34.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Ranchester Member (Amsden Formation), Morrowan (318.1 - 314.6 Ma)
• Limestone 99-101 ft above base of Amsden Fm. "Pennsylvanian (Morrowan)."
• bed-level stratigraphic resolution
Environment/lithology: offshore shelf; lithified, lenticular, concretionary, gray, yellow, sandy, cherty/siliceous dolomite and green, red shale
Reposited in the USGS
• "Collected by W.J. Sando and K.R. Moore, 1965."
Primary reference: W. J. Sando, M., J.r. Gordon, and J. T. Dutro. 1975. Stratigraphy and geologic history of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming. United States Geological Survey Professional Paper 848A:1-83 [J. Alroy/M. Sommers/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 5730: authorized by John Alroy, entered by Mike Sommers on 17.11.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Foraminifera | |
cf. Palaeonubecularia sp. Reitlinger 1950 | |
Tubothalamea | |
Cornuspiridae indet. Schultze 1854 | |
Foraminifera | |
Eostaffellina paraprotvae, Eostaffellina sp., Eostaffella circuli, Eostaffella ex gr. pseudostruvei, Eostaffella sp., Millerella sp.
Eostaffellina sp. Reitlinger 1963
Eostaffella sp. Rauser-Chernousova 1948 | |
Calcisphaera | |
Calcisphaera sp. Williamson 1880 |