Also known as Reef 3181
Where: Esmeralda County, Nevada (37.5° N, 117.5° W: paleocoordinates 1.1° S, 95.1° W)
• outcrop-level geographic resolution
When: Bonnia-Olenellus trilobite zone, Harkless Formation, Dyeran (515.3 - 511.2 Ma)
• Correlated with the Saline Valley Formation of eastern California. Laterally adjacent to and interfingering with the biostromal limestone is an archaeocyathan-rich biosparite indicating rewroking and deposition as lenses along side the bistromal growths. The siltstones/shales above and below the biostrome are lacking archaeocyathan. AGE: Waucoban; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Bonnia-Olenellus zone).
•Bonnia-Olenellus is Dyeran (upper Waucoban).
• formation-level stratigraphic resolution
Environment/lithology: reef, buildup or bioherm; lithified sandstone and shale
Size classes: macrofossils, mesofossils
Preservation: replaced with calcite, replaced with phosphate
Collection methods: The taxonomic list does not include possible chancellorid spines found in the biostromal limestone, but does include unidentified trilobite fragments, echinoderm plates, and bivalves.
Primary reference: M. Savarese and P. W. Signor. 1989. New Archaeocyathan occurrences in the Upper Harkless Formation (Lower Cabrian of western Nevada). Journal of Paleontology 63(5):539-549 [M. Patzkowsky/P. Borkow/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 7787: authorized by Mark Patzkowsky, entered by Phil Borkow on 02.06.2000, edited by Alex Lin and Mihaela Krause
Creative Commons license: CC BY (attribution)
Taxonomic list
Renalcis | |
Renalcis sp. Vologdin 1932 | |
unclassified | |
Echinodermata indet. Klein 1754 | |
Helcionelloida | |
Pelagiella sp. Matthew 1895 | |
Bivalvia | |
Bivalvia indet. Linnaeus 1758 clam | |
Stenothecoida | |
Stenothecoides sp. Resser 1938 | |
Lingulata | |
Kyrshabaktella sp.1 Koneva 1986 | |
Trilobita | |
Trilobita indet. Walch 1771 trilobite | |
Olenellus sp. Hall 1861 trilobite | |
| |
Salterella | |
Salterella sp. Billings 1861 | |
Archaeocyatha | |
| |
"Diplocyathellus sp." = Zonacyathus
"Diplocyathellus sp." = Zonacyathus archaeocyath sponge | |
Metaldetes sp. archaeocyath sponge | |
Retilamina debrennei archaeocyath sponge | |
Arrythmocricus sp. archaeocyath sponge |