Where: Iowa (42.5° N, 90.9° W: paleocoordinates 21.0° 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) to Early Wenlock"

• 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 45.29, which gives abundances for echinoderms, trilobites, and brachiopods), as well as other taxa mentioned in text. Brachiopods are said to be essentially the same as for the Costistricklandia castellana-Eospirifer Community of Witzke and Johnson (PBDB coll. 24963), but these are not duplicate collections.

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 26768: authorized by Michael Foote, entered by Michael Foote on 30.10.2002

Creative Commons license: CC BY (attribution)