Quarry 3.6 miles west-northwest of Fennimore (Ordovician of the United States)

Where: Grant County, Wisconsin (43.0° N, 90.7° W: paleocoordinates 20.5° S, 63.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Mifflin Member (McGregor Formation), Blackriveran (457.3 - 449.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: argillaceous limestone

• Environmental call by T. Hanson.
• "Thinly bedded argillaceous and shaly fossiliferous limestone." Lithology from O. L. Karklins. 1987. Bryozoa from Rocklandian (Middle Ordovician) rocks of the Upper Mississippi Valley region. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :173-176. Edited by R. E. Sloan

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: K.W. Westphal. 1974. New fossils from the Middle Ordovician Platteville Formation of southwest Wisconsin. Journal of Paleontology 48:79-83 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 195567: authorized by Pete Wagner, entered by Pete Wagner on 13.08.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
 Rhombifera - Pleurocystitidae
"Praepleurocystis nodosus n. sp." = Praepleurocystis watkinsi
"Praepleurocystis nodosus n. sp." = Praepleurocystis watkinsi Strimple 1948