Also known as Sando et al. Amsden Creek Loc.68
Where: Sheridan County, Wyoming (44.9° N, 107.4° W: paleocoordinates 4.5° N, 34.3° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Ranchester Member (Amsden Formation), Morrowan (323.2 - 318.6 Ma)
• Float from limestone about 100 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 5732: authorized by John Alroy, entered by Mike Sommers on 17.11.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Conodonta | |
Strophomenata | |
Rhynchonellata | |
Composita ovata Mather 1915 | |
Calcisphaera | |
Calcisphaera sp. Williamson 1880 | |
Tubothalamea | |
Cornuspiridae indet. Schultze 1854 | |
Foraminifera | |
Biseriella ex gr. parva Chernysheva 1948
Globivalvulina sp. Schubert 1921 | |
Tetrataxis sp. Ehrenberg 1854 | |