Where: Elko County, Nevada (40.3° N, 115.2° W)
• Paleocoordinates: 22.0° N, 33.7° W (Wright 2013)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Plympton Formation (Park City Group), Capitanian (264.3 - 259.5 Ma)
• Tongue within siltstone of Plympton Formation, 150 feet below base of Gerster Fm.
•Davydov et al. (2018) dated an ash bed in the upper Meade Peak Mb (Phosphoria Formation) as latest Capitanian, 260.57 Ma. The Plympton Formation is traditionally thought to be equivalent in northeastern Nevada to the Meade Peak of Utah and Idaho. These collections come from the upper Plympton Formation, near the contact with the Gerster Formation, so are likely Capitanian in age.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; dolomitic, shelly/skeletal, silty packstone
Size class: macrofossils
Preservation: replaced with silica
Collection methods: bulk, chemical,
Primary reference: B. R. Wardlaw. 1977. The biostratigraphy and paleoecology of the Gerster Limestone (Upper Permian) in Nevada and Utah. U.S.G.S. Open File Report 77(470):1-125 [D. Bottjer/M. Clapham/M. Clapham]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 39764: authorized by David Bottjer, entered by Matthew Clapham on 06.06.2004
Creative Commons license: CC0 (CC0)
Taxonomic list
Rhynchonellata | |
Rhynchopora taylori Girty 1910 | |
Composita mira Girty 1899 | |
Xestotrema pulchrum Meek 1860 | |
Strophomenata | |
Derbyia sulca Branson 1930 | |
Thamnosia depressa Cooper 1953
Rugatia cf. occidentalis Newberry 1861 |