Tony Grove Lake Member, Great Basin, Delmar Range (Silurian of the United States)
Where: Nevada (39.3° N, 114.9° W: paleocoordinates 7.6° S, 72.0° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Tony Grove Lake Member (Laketown Dolomite Formation), Rhuddanian (443.7 - 439.0 Ma)
Environment/lithology: shallow subtidal; gray dolomite
• Light gray to grayish-black, micricrystalline to finely crystalline dolostone, which ranges from thin- to very thick-bedded
Primary reference: P. M. Sheehan. 1980. The Late Ordovician and Silurian of the Eastern Great Basin, Part 3. Brachiopods of the Tony Grove Lake Member of the Laketown Dolomite. Milwaukee Public Museum Contributions in Biology and Geology 30:1-23 [M. Patzkowsky/Z. Krug/Z. Krug] more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 51496: authorized by Mark Patzkowsky, entered by Zack Krug on 06.06.2005