Where: Inyo County, California (36.8° N, 117.5° W: paleocoordinates 3.0° N, 46.9° W)
• coordinate estimated from map
When: Rest Spring Formation, Arnsbergian (327.0 - 323.7 Ma)
• McAllister (1952) and Gordon (1964) say this is the uppermost 10 ft and probably lower 5 ft of Rest Spring Shale
•If Perdido group, this would be the Mexican Spring Formation of Stevens et al., 1996
•Titus (2000) says this is lower Rest Spring Shale, but doesn't give any evidence. Says "the formational contact between the Rest Spring Shale and the underlying Mexican Spring Formation essentially coincides with the Pendleian-Arnsbergian boundary" making this Arnsbergian if Rest Spring, or Pendleian if Mexican Spring.
Environment/lithology: marine; fine-grained, gray limestone and calcareous siltstone
Size class: macrofossils
Collected by J. F. McAllister and S. W. Muller in 18, 1947; reposited in the CAS
Collection methods: surface (float),
Primary reference: M. Gordon, Jr. 1964. California Carboniferous cephalopods. United States Geological Survey Professional Paper 483-A:A1-A27 [J. Marcot/J. Marcot/J. Marcot]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 217147: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.01.2021
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
? Hematites sp. Flower and Gordon 1959 belemnite | |
Mitorthoceras clinatum Gordon 1964
Mitorthoceras cf. perfilosum Gordon 1960 | |
? Bactrites cf. carbonarius Smith 1903 | |
Scyphoceras cf. cessator Hall and Whitfield 1877 nautiloid | |
"Cravenoceras inyoense" = Fayettevillea inyoense, Eosyngastrioceras quadratum, "Cravenoceras hesperium" = Eosyngastrioceras hesperium
"Cravenoceras inyoense" = Fayettevillea inyoense Gordon 1964 ammonite
Eosyngastrioceras quadratum Titus 2000 ammonite
"Cravenoceras hesperium" = Eosyngastrioceras hesperium Miller and Furnish 1940 ammonite |