USGS 3140-PC (Carboniferous of the United States)

Also known as Sando et al. Cherokee Spring Loc.4

Where: Carbon County, Wyoming (41.8° N, 107.3° W)

• Paleocoordinates: 1.8° S, 39.2° W (Wright 2013)

• coordinate estimated from map

• small collection-level geographic resolution

When: Neokoninckophyllum hamatilus zone, Horseshoe Member (Amsden Formation), Morrowan (323.2 - 318.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, red, silty, sandy, calcareous shale and gypsiferous, shelly/skeletal limestone

• horseshoe: predominantly fissile, platy or blocky siltstone, shale, and mudstone. weathers bright red to grayish red or purple. thin beds and lenses of platy, white to red, fine grained, commonly calcareous quartz sandstone occur sporadically throughout member. thin beds of silty, sandy, or argillaceous limestone are rare in central wy, significant proportion in western wy. dolomite is a rare constituent. limestone beds are either fine grained and unfossiliferous or fine to medium grained and contain a shelly fauna. anhydrite and gypsum present at several localities. represents offshore marine facies of the transgressing amsden sea.

Reposited in the USGS

• "Collected by V.H. Barnett, 1907."

Primary reference: W. J. Sando, M., J.r. Gordon, and J. T. Dutro. 1975. Stratigraphy and geologic history of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming. United States Geological Survey Professional Paper 848A:1-83 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5675: authorized by John Alroy, entered by Mike Sommers on 15.11.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Antracospirifer rawlinsensis, Apterrinellidae indet.
Asphaltina
  -
Asphaltina sp.
Asphaltina sp. Mamet 1972
Foraminifera
 Fusulinoidea - Staffellidae
Pseudoendothyra sp.
 Fusulinoidea - Eostaffellidae
Millerella pressa, Millerella sp.
 Archaediscacea - Archaediscidae
Neoarchaediscus incertus, Neoarchaediscus parvus, Archaediscus ex gr. krestovnikovi, Archaediscus sp., Asteroarchaediscus ex gr. bachkiricus, Asteroarchaediscus sp., Planospirodiscus sp.
 Palaeotextularoidea - Biseriamminidae
Lipinella sp.
Lipinella sp.
(nom. nud.)
 Fusulinina - Earlandiidae
Earlandia sp.
 Fusulinina - Pseudoammodiscidae
Pseudoglomospira sp.
 Endothyroidea - Endothyridae
Endothyra ex gr. prisca, Endothyra sp.
Bivalvia
 Carditida - Astartidae
Astartella ? concentrica
Astartella ? concentrica Conrad 1842 clam
Strophomenata
 Productida - Linoproductidae
Linoproductus planiventralis
 Orthotetida - Derbyiidae
Derbyia cf. robusta
Rhynchonellata
 Athyridida - Athyrididae
Composita ? ovata
Composita ? ovata Mather 1915
Calcisphaera
  -
Calcisphaera sp.
Calcisphaera sp. Williamson 1880
Anthozoa
 Stauriida - Neokoninckophyllidae
Neokoninckophyllum hamatilis