Where: Millard County, Utah (39.5° N, 112.9° W: paleocoordinates 4.6° S, 91.6° W)
• local area-level geographic resolution
When: Ehmaniella zone, Wheeler Formation, Menevian (504.5 - 499.5 Ma)
• The fauna described range from 71m above the base of the formation to the top of the formation.
• group of beds-level stratigraphic resolution
Environment/lithology: basinal (); lithified, black, calcareous shale
Collection methods: May represent a shell accumulation due to a sediment lag which was reworked and then lithified
Primary reference: R. A. Robison. 1999. Base of Ptychagnostus atabus Zone, candidate stratotype for base of unnamed international series. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 15-17 [M. Patzkowsky/P. Borkow]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 10567: authorized by Mark Patzkowsky, entered by Phil Borkow on 23.05.2001
Creative Commons license: CC BY (attribution)
Taxonomic list
Artiopoda | |
"Peronopsis acadica" = Acadagnostus acadica
"Peronopsis acadica" = Acadagnostus acadica Hartt 1868 | |
Ptychagnostus atavus Tullberg 1880 | |
Peronopsis interstricata, "Peronopsis segmenta" = Pentagnostus (Meragnostus) segmenta
"Peronopsis segmenta" = Pentagnostus (Meragnostus) segmenta Robison 1964 |