Where: United Kingdom (54.6° N, 6.9° W: paleocoordinates 21.5° S, 30.2° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Mitchell Siltstone Member (Bardahessiagh Formation), Caradoc to Caradoc (458.4 - 449.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, micaceous siltstone

Preservation: mold/impression

Primary reference: D. B. Blake. 2000. An Archegonaster-like somasteroid (Echinodermata) from Pomeroy, co. Tyrone, Northern Ireland. Irish Journal of Earth Sciences 18:89-99 [L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72146: authorized by Loic Villier, entered by Loic Villier on 26.05.2007

Creative Commons license: CC BY (attribution)