Where: Fillmore County, Minnesota (43.7° N, 92.4° W: paleocoordinates 19.2° S, 63.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Maquoketa Formation, Edenian to Edenian (451.0 - 449.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: J. K. Rigby and T. N. Bayer. 1971. Sponges of the Ordovician Maquoketa Formation in Minnesota and Iowa. Journal of Paleontology 45(4):608-627 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 120505: authorized by Wolfgang Kiessling, entered by Uta Merkel on 15.11.2011

Creative Commons license: CC BY (attribution)