Where: Iowa (41.9° N, 90.2° W: paleocoordinates 21.9° S, 55.1° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Welton Member (Scotch Grove Formation), Telychian to Telychian (438.5 - 430.5 Ma)

• "Late Llandovery (C5-C6) to Early Wenlockian...lower Welton Member"

• member-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; dolomitic, shelly/skeletal wackestone and dolomitic, shelly/skeletal packstone

Collection methods: Includes material from type locality (table 45.30, which gives abundances for echinoderms and brachiopods), as well as other taxa mentioned in text. The association is said to be part of the 'Costistricklandia' castellana-Eospirifer Community of Witzke and Johnson (PBDB coll. 24963), but the collections are not duplicates.

Primary reference: T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 26769: authorized by Michael Foote, entered by Michael Foote on 30.10.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)