Where: Fillmore County, Minnesota (43.8° N, 92.2° W: paleocoordinates 19.2° S, 63.1° W)

• local area-level geographic resolution

When: Rhinidictya bed Member (Decorah Formation), Rocklandian (457.3 - 449.6 Ma)

• Given as Rhinidictya bed of Black River formation. This is contemporaneous with the Specht's Ferry Member.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Collected by E. O. Ulrich in 1890 - 1895; reposited in the USNM

Primary reference: E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154411: authorized by Pete Wagner, entered by Pete Wagner on 19.02.2014

Creative Commons license: CC BY (attribution)