Where: Iowa (43.1° N, 91.9° W: paleocoordinates 19.1° S, 60.0° W)

• coordinate estimated from map

When: Maquoketa Group, Richmondian (449.6 - 445.5 Ma)

• "Wykoff Limestone, Maquoketa Group", in Ulrich (1924)

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Primary reference: E. O. Ulrich. 1925. New classification of the "Heterocrinidae". Canada Geological Survey, Memoir 138:82-106 [G. Webster/G. Webster/S. Cole]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 173365: authorized by Björn Kröger, entered by Björn Kröger on 21.09.2015

Creative Commons license: CC BY (attribution)