Chatfield, Decorah Shale (Ordovician of the United States)

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

• coordinate estimated from map

When: Decorah Shale Formation, Blackriveran (460.9 - 449.5 Ma)

• "Black River (Decorah) 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 167628: authorized by Björn Kröger, entered by Björn Kröger on 26.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

 Cystoporata - Ceramoporidae
Spatiopora lineata Ulrich 1882
Spatiopora lineata incepta