Where: Iowa (41.9° N, 90.6° W)

• Paleocoordinates: 27.4° S, 102.2° W (Wright 2013)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Welton Member (Scotch Grove Formation), Telychian (438.5 - 433.4 Ma)

• Authors give age of this community as Late Llandovery (C5-C6) to Early Wenlock. I am following Witzke and Johnson (1999, PBDB ref. 7006) in the age call. The material included in this collection is only from the type locality. Community mostly from lower-middle Welton Member, but not in the basal.

• member-level stratigraphic resolution

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

Collection methods: Some overlap with PBDB collection 24969 (Ferganella Community). Table 45.20 gives abundances for echinoderms.

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 26708: authorized by Michael Foote, entered by Michael Foote on 25.10.2002

Creative Commons license: CC0 (CC0)