Where: Inyo County, California (36.5° N, 117.8° W)
• Paleocoordinates: 2.4° S, 52.0° W (Wright 2013)
• coordinate estimated from map
When: Rest Spring Formation, Arnsbergian (327.0 - 323.7 Ma)
• originally indicated as "Chainman Shale" Late Arnsbergian age from Titus 2000
Environment/lithology: lithified, coarse-grained, shelly/skeletal limestone and black shale
Size classes: macrofossils, mesofossils
Preservation: mold/impression
Collected by C. W. Merriam
Collection methods: surface (float), surface (in situ)
Primary reference: C. W. Merriam. 1963. Geology of the Cerro Gordo mining district, Inyo County, California. United States Geological Survey Professional Paper 408:1-83 [J. Marcot/J. Marcot]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 226420: authorized by Jonathan Marcot, entered by Jonathan Marcot on 07.07.2022
Creative Commons license: CC0 (CC0)
Taxonomic list
| Trilobita | |
"Proetus cf. missouriensis" = Pudoproetus missouriensis
"Proetus cf. missouriensis" = Pudoproetus missouriensis Shumard 1855 trilobite | |
| Stenolaemata | |
|
| |
| Rhynchonellata | |
|
Composita cf. lewisensis Weller 1914 | |
|
? Rhynchopora sp. King 1865 | |
|
Spirifer cf. haydenianus Girty 1927
Spirifer cf. brazerianus Girty 1927 | |
| Strophomenata | |
"Diaphragmus cf. elegans" = Echinoconchus elegans
"Diaphragmus cf. elegans" = Echinoconchus elegans Norwood and Pratten 1855 | |
Dictyoclostus sp., "Productus cf. richardsi" = Dictyoclostus richardsi
"Productus cf. richardsi" = Dictyoclostus richardsi Girty 1927 | |
"Productus cf. ovatus" = Linoproductus ovatus
"Productus cf. ovatus" = Linoproductus ovatus Hall 1858 | |
| Gastropoda | |
|
Pleurotomaria cf. brazeriana Girty 1927 snail | |
| Demospongiae | |
|
Chaetetes sp. Fischer von Waldheim 1829 demosponge | |
| Anthozoa | |
"Triplophyllites "sp., cf. T. sp. A"" = Amplexizaphrentis
"Triplophyllites "sp., cf. T. sp. A"" = Amplexizaphrentis Vaughan 1906 horn coral | |