Just northwest edge of Pindall (Ordovician of the United States)

Where: Arkansas (36.1° N, 92.9° W: paleocoordinates 24.0° S, 74.7° W)

• coordinate based on nearby landmark

When: Histiodella altifrons conodont zone, Jasper Member (Everton Formation), Whiterockian (471.8 - 457.5 Ma)

• Will be Kanoshian.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; limestone

• based on "Stratigraphy of Everton Formation (Early Medial Ordovician), Northern Arkansas, Raymond W. Suhm (2), AAPG Bulletin Volume 58 (1974)"

Size class: macrofossils

Preservation: original aragonite, replaced with calcite

Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186178: authorized by Pete Wagner, entered by Pete Wagner on 16.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthotetida - Triplesiidae