Where: Iowa County, Wisconsin (42.9° N, 90.2° W: paleocoordinates 20.9° S, 62.8° W)

• coordinate estimated from map

When: Trentonian (457.3 - 449.6 Ma)

• "Lower Trenton Shales", in Bassler (1911)

Environment/lithology: marine; shale

Size classes: macrofossils, mesofossils

Primary reference: R. S. Bassler. 1911. The early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the United States National Museum 77:1-375 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 167621: authorized by Björn Kröger, entered by Björn Kröger on 26.03.2015

Creative Commons license: CC BY (attribution)