Minneapolis, Decorah Shales (Ordovician of the United States)

Where: Minnesota (45.0° N, 93.3° W: paleocoordinates 17.8° S, 62.8° W)

• coordinate estimated from map

When: Decorah Shale Formation, Blackriveran (457.3 - 449.6 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 167592: authorized by Björn Kröger, entered by Björn Kröger on 25.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Stenolaemata
 Cryptostomata - Escharoporidae
Escharopora subrecta, Arthropora simplex
Arthropora simplex Ulrich 1886
 Cryptostomata - Ptilodictyidae
Stictoporella gracilis
Stictoporella gracilis Eichwald 1840
 Cryptostomata - Rhinidictyidae
Phyllodictya varia
Phyllodictya varia Ulrich 1893
 Trepostomata - Heterotrypidae
Dekayella praenuntia
 Trepostomata - Dittoporidae
Hemiphragma irrasum
Hemiphragma irrasum Ulrich 1893
 Trepostomata - Halloporidae
Hallopora undulata
Hallopora undulata Ulrich 1886
 Trepostomata - Trematoporidae
Batostoma fertile
Batostoma fertile Ulrich 1886
Batostoma fertile circulare
  - Phylloporinidae
Chasmatopora reticulata