Where: Tennessee (36.4° N, 83.7° W: paleocoordinates 29.0° S, 63.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wardell Formation, Ashbyan (460.9 - 449.5 Ma)

• Hesperorthis beds.

•

•The Wardell formation appears to be the equivalent of the Ridley limestone in the Appalachian Valley. This equivalence is shown in the common presence in the two formations of Fascifera stonensis, Ancistrorhyncha costata, and Opikina speciosa. The Wardell and Ridley also see establishment of the genus Strophomena which appeared in Murfreesboro. The Wardell is the level at which Doleroides appears in abundance and virtually displaces Mimella, which is commonest below.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Reposited in the USNM

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 164924: authorized by Pete Wagner, entered by Pete Wagner on 04.01.2015

Creative Commons license: CC BY (attribution)