PBDB

LSJU loc. 23145, Cerro Gordo Spring Trail (Carboniferous of the United States)

Also known as Cerro Gordo Pipeline Trail; USGS loc. 10403-PC; USGS loc. 15336-PC; USGS loc. 15335-PC; Locality 22 of Merriam 1963

Where: Inyo County, California (36.6° N, 117.8° W: paleocoordinates 3.0° N, 47.2° W)

• coordinate estimated from map

When: Rest Spring Formation, Arnsbergian (326.4 - 318.1 Ma)

• originally indicated as "White Pine Shale (Chainman Shale)" Late Arnsbergian age from Titus 2000

Environment/lithology: marine; metamorphosed, ferruginous, black, gray shale

• "grayish-black slightly altered shale"

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by Kirk; C. W. Merriam; ; reposited in the CAS, USGS

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 220592: authorized by Jonathan Marcot, entered by Jonathan Marcot on 10.06.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Plantae indet. Plantae indet. Haeckel 1866 "Land plants (abundant, fragmentary ; one well-preserved fernlike type)"
Cephalopoda
Bactritida - Bactritidae	? Bactrites cf. carbonarius ? Bactrites cf. carbonarius Smith 1903
Nautilida -	Nautilida indet. Nautilida indet. Agassiz 1847 nautiloid "?Nautilus sp. (large form. possibly a Liroceras)"
Orthoceratoidea -	Orthocerida indet. Orthocerida indet. Kuhn 1940 as Orthoceracone indet.
Goniatitida -	Goniatitida indet. Goniatitida indet. Hyatt 1884 ammonite "Small goniatite with narrow venter; genus indeterminate"
Goniatitida - Glaphyritidae	"Cravenoceras cf. nevadense" = Glaphyrites nevadensis, "Cravenoceras cf. richardsonianum" = Richardsonites richardsonianus "Cravenoceras cf. nevadense" = Glaphyrites nevadensis Miller and Furnish 1940 ammonite "Cravenoceras cf. richardsonianum" = Richardsonites richardsonianus Girty 1909 ammonite
Goniatitida - Girtyoceratidae	Eumorphoceras bisulcatum Eumorphoceras bisulcatum Girty 1909 ammonite USGS locs. 23145, 10403-PC, 15334-PC, and 15335-PC
Goniatitida - Cravenoceratidae	Cravenoceratoides cf. nititoides Cravenoceratoides cf. nititoides Bisat 1932 ammonite
Bivalvia
Ostreida - Pterineidae	Caneyella "n. sp., cf. C. richardsoni", Caneyella wapanuckensis Caneyella "n. sp., cf. C. richardsoni" Girty 1910 oyster Caneyella wapanuckensis Girty 1909 oyster
Rhynchonellata
Spiriferida - Spiriferidae	Spirifer sp., Spirifer cf. pellaensis Spirifer sp. Sowerby 1818 "Spirifer cf. S. brazerianus Girty or cf. S. grimes Hall" Spirifer cf. pellaensis Weller 1914
Strophomenata
Productida - Productellidae	Productus "n. sp., cf. P. semistriatus" Productus "n. sp., cf. P. semistriatus"
Productida - Productidae	Dictyoclostus sp. Dictyoclostus sp. "Dictyoclostus cf. D. burlingtonensis (Hall) or cf. D. fernglenensis (Weller)"
Gnathostomata
-	Chondrichthyes indet. Chondrichthyes indet. Huxley 1880 cartilaginous fish "Shark teeth (coarsely serrated edge, 3/4 in. long)"
Anthozoa
Stauriida - Hapsiphyllidae	"Triplophyllites "sp. A"" = Amplexizaphrentis "Triplophyllites "sp. A"" = Amplexizaphrentis Vaughan 1906 horn coral