UCMP loc. B-946, Perdido Canyon Section, Cottonwood Range (Carboniferous of the United States)

Where: Inyo County, California (36.8° N, 117.5° W: paleocoordinates 9.0° S, 54.5° W)

• coordinate estimated from map

When: Tin Mountain Formation, Early/Lower Mississippian (358.9 - 346.7 Ma)

• B-946.-Unit 6, Perdido Canyon section of Tin Mountain limestone. Lower Tin Mountain limestone.

Environment/lithology: lithified, fine-grained, medium, coarse, nodular, shelly/skeletal, gray, cherty/siliceous limestone

• Limestone, fine- to coarse-grained ; gray, weathering black ; beds as much as 1 foot thick, nodular ; lenses of flint oriented in bedding planes generally separated by intervals greater than their length, lenses and layers of brachio­ pod coquina ; scattered shaly layers. Sample B-946. Sample B-947. Sample B-948, 4.0 per cent insoluble residue of dark-gray silty clay and silicified fossils with isolated rounded quartz sand grains ; texture of fine to coarse grains in very fine-grained matrix ; no internal structure apparent.

Size class: macrofossils

Collected by R. L. Langenheim, Jr.; reposited in the UCMP

Collection methods: surface (float)

Primary reference: R. L. Langenheim, Jr. and H. Tischler. 1960. Mississippian and Devonian paleontology and stratigraphy, Quartz Spring area Inyo County, California. University of California Publications in Geological Sciences 38(2):89-152 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 226761: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.07.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
"columnals"
Rhynchonellata
 Orthida - Rhipidomellidae
Rhipidomella sp.
 Spiriferinida - Punctospiriferidae
Punctospirifer sp.
Punctospirifer sp. North 1920
 Athyridida - Athyrididae
Cleiothyridina cf. hirsuta
Strophomenata
 Productida - Productellidae
Productella sp.
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
"small, silicified, high-spired gastropods"