Glassia obovata association, middle Elton Beds, England (Silurian of the United Kingdom)
Where: England, United Kingdom (52.4° N, 2.7° W: paleocoordinates 24.1° S, 11.9° W)
• coordinate based on political unit
When: middle Member (Elton Beds Formation), Ludlow (422.9 - 418.7 Ma)
• "Upper Sil. Ludlow Series"
Environment/lithology: offshore; burrowed shale
• "bioturbated mudstone and laminated shale. very low energy distal shelf; Clorinda comm. equivalent BA5"
Primary reference: J. J. Sepkoski Jr. 1998. Rates of speciation in the fossil record. Philosophical Transaction of the Royal Society Biological Sciences 353(1366):315-326 [J. Sepkoski/M. Sommers/A. Clement] more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 482: authorized by Jack Sepkoski, entered by Mike Sommers on 15.12.1998