Where: Utah (38.9° N, 113.4° W: paleocoordinates 4.2° S, 92.0° W)
• coordinate based on political unit
• basin-level geographic resolution
When: Ptychagnostus atavus or Lejopyge trilobite zone, Marjum Limestone Formation, Marjumian (513.0 - 498.5 Ma)
• "Ptyagnostus atavus or Leiopyge calva Zone" (Topazan, which is still Marjumian here; PJW)
Environment/lithology: offshore ramp; burrowed, peloidal packstone
Size classes: macrofossils, mesofossils
Primary reference: A. J. Rowell and N. E. Caruso. 1985. The evolutionary significance of Nisusia sulcata, an early articulate brachiopod. Journal of Paleontology 59(5):1227-1242 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 262: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998
Creative Commons license: CC BY (attribution)
Taxonomic list
Kutorginata | |
Nisusia sp. Walcott 1905 | |
Lingulata | |
Prototreta sp. Bell 1941 | |
Trilobita | |
Modocia sp. Walcott 1924 trilobite | |
Olenoides sp. Meek 1877 trilobite | |
Artiopoda | |
Peronopsis sp. Corda 1847 |