Where: Nevada (40.5° N, 118.1° W: paleocoordinates 11.1° N, 41.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Bithynian to Bithynian (247.2 - 242.0 Ma)
• Ammonoids of the hyatti and rotelliformis zones
• group of beds-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Collected by Fortieth Parallel Expedition in 1867-1869; reposited in the USNM
Primary reference: F. B. Meek. 1877. Part I. Palaeontology. Report of the Geological Exploration of the Fortieth Parallel 4:1-197 [P. Wagner/P. Wagner/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 142623: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
"Sphaera" whitneyi n. sp.
"Sphaera" whitneyi n. sp. Meek 1877 clam | |
| Cephalopoda | |
"Arcestes perplanus n. sp." = Gymnites perplanus
"Arcestes perplanus n. sp." = Gymnites perplanus Meek 1877 ceratite | |
"Gymnotoceras rotelliforme n. gen. n. sp." = Gymnotoceras rotelliformis
"Gymnotoceras rotelliforme n. gen. n. sp." = Gymnotoceras rotelliformis Meek 1877 ceratite | |