USGS 4449-CO. Hillard Peak (Cambrian to of the United States)
Where: Alaska (65.0° N, 141.0° W: paleocoordinates 2.8° N, 64.6° W)
When: Poliellina - Serrodiscus trilobite zone, Adams Argillite Formation, Botomian to Botomian (516.0 - 510.2 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: shale
• Argillite
Size classes: macrofossils, mesofossils
Primary reference: A.R. Palmer. 1968. Cambrian trilobites of East-Central Alaska. United States Geological Survey Professional Paper 559(B) [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 225081: authorized by Pete Wagner, entered by Pete Wagner on 24.04.2022
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Artiopoda | |
"Neocobboldia spinosa" = Alaskadiscus spinosus
"Neocobboldia spinosa" = Alaskadiscus spinosus Palmer 1968 | |
| Trilobita | |
|
Polliaxis sp. Palmer 1968 trilobite | |
|
Dinesus sp. Etheridge 1896 trilobite | |