1205-middle (Carboniferous of the United States)

Where: Bonneville, Madison, Teton County, Idaho (43.7° N, 111.3° W: paleocoordinates 4.2° N, 38.6° W)

When: Late/Upper Mississippian (326.4 - 318.1 Ma)

• May correlate with Amsden Formation.

Environment/lithology: marine; lithified, black, green, red, yellow shale

• Variegated shales.

Size classes: macrofossils, mesofossils

Primary reference: M. H. Staatz and H. F. Albee. 1966. Geology of the Garns Mountain Quadrangle Bonneville, Madison, and Teton Counties, Idaho. United States Geological Survey Bulletin (1205) [A. Zaffos/E. Ito]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 184610: authorized by Andrew Zaffos, entered by Erika Ito on 13.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Productida - Chonetidae
Chonetes sp. Fischer de Waldheim 1830
 Orthotetida - Orthotetidae
Orthotetes sp.
aff. O. kaskaskiensis
 Athyridida - Athyrididae
Composita sp. Brown 1849
aff. C. subquadrata
 Spiriferinida - Punctospiriferidae
Punctospirifer sp. North 1920
 Spiriferida - Spiriferidae
Spirifer sp. Sowerby 1818
aff. S. occiduus