Also known as SF 622
Where: Eureka County, Nevada (39.2° N, 116.3° W: paleocoordinates 5.2° S, 83.1° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Pseudocybele nasuta trilobite zone, Ninemile Formation, Blackhillsian (474.9 - 470.0 Ma)
• Ibexian Zone J; Was Ninemile / lowermost Antelope Valley, but this zone is Ninemile
• bed-level stratigraphic resolution
Environment/lithology: deep subtidal shelf; lithified limestone
Size class: macrofossils
Preservation: replaced with silica
Collected by J. Ross, Jr.
Collection methods: bulk,
Primary reference: R. J., J.r. Ross. 1970. Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada. United States Geological Survey Professional Paper 639:1-99 [S. Finnegan/S. Finnegan/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 104556: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
? Idiostrophia sp. Ulrich and Cooper 1936 | |
Hesperonomia antelopensis Ulrich and Cooper 1936 | |
Trilobita | |
| |
"Ischyrotoma caudanodosa" = Dimeropygiella caudanodosa
"Ischyrotoma caudanodosa" = Dimeropygiella caudanodosa Ross 1951 trilobite | |
Psalikilus sp. Ross 1951 trilobite | |
? Isoteloides sp. Raymond 1910 trilobite
Ptyocephalus sp. Agassiz 1843 trilobite | |
Pterobranchia | |
"Didymograptus cf. artus" = Didymograptus (Didymograptus) artus
"Didymograptus cf. artus" = Didymograptus (Didymograptus) artus Elles and Wood 1901 graptolite |