Iron Ridge, Richmond Group (Ordovician of the United States)
Where: Wisconsin (43.4° N, 88.5° W: paleocoordinates 20.6° S, 57.9° W)
• coordinate estimated from map
When: Richmond Group, Richmondian (449.6 - 445.5 Ma)
• "highest beds of Maquoketa Shale of the Richmond Group", in Bassler (1911)
Environment/lithology: marine; lithology not reported
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 167556: authorized by Björn Kröger, entered by Björn Kröger on 24.03.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Stenolaemata | |
Corynotrypa abrupta Bassler 1911 |