USGS 19156-PC (Carboniferous of the United States)

Also known as Sando et al. Soda Creek Loc.41

Where: Teton County, Wyoming (43.9° N, 110.1° W: paleocoordinates 1.9° N, 39.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Horseshoe Member (Amsden Formation), Chesterian (335.5 - 323.2 Ma)

• Limestone and shale about 20-30 ft above base of Amsden Fm.

• 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 J.D. Love and H.R. Bergquist, 1945."

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 5714: authorized by John Alroy, entered by Mike Sommers on 17.11.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Stauriida - Amplexidae
Amplexus sp.
Amplexus sp. Sowerby 1814 horn coral
Bivalvia
 Carditida - Astartidae
Astartella sp.
Astartella sp. Hall 1858 clam
Rhynchonellata
 Spiriferinida - Reticulariinidae
? Reticulariina sp.
? Reticulariina sp. Fredericks 1916
 Orthida - Schizophoriidae
Schizophoria depressa
 Athyridida - Athyrididae
Composita poposiensis, Composita aff. laevis, Cleiothyridina atrypoides
Composita aff. laevis Weller 1914
 Spiriferida - Choristitidae
Brachythyrina washakiensis
Strophomenata
 Productida - Productellidae
Diaphragmus nivosus, ? Antiquatonia sp.
Diaphragmus nivosus Gordon 1975
? Antiquatonia sp. Miloradovich 1945
 Productida - Productidae
Inflatia lovei
 Strophomenida -
Strophomenida indet.
Strophomenida indet. Opik 1934
orthotetoid gen. et sp. indet.