Where: California (36.8° N, 117.1° W: paleocoordinates 1.2° S, 94.5° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Albertella trilobite zone, Jangle Limestone Member (Carrara Formation), Delamaran (511.2 - 506.5 Ma)
• A slightly more diverse single collection from the middle of the Jangle Limestone Member in the Grapevine Mountains contains a fauna with affinities to both the Zacanthoidid and Albertella-Mexicella Zonules of the Albertella Zone.
• member-level stratigraphic resolution
Environment/lithology: shallow subtidal; lime mudstone and shelly/skeletal wackestone
•lime mudstones, trilobite- and echinodermfragment
•wackestones, packstones, and grainstones, oolite,
•fenestral-fabric and laminated limestones.
Size classes: macrofossils, mesofossils, microfossils
Primary reference: A. R. Palmer and R. B. Halley. 1979. Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin. United States Geological Survey Professional Paper 1047:1-131 [W. Kiessling/M. Krause/J. Ju]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 149619: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 16.08.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Trilobita | |
Mexicella grandoculus n. sp.
Mexicella grandoculus n. sp. Palmer and Halley 1979 trilobite | |
|
Volocephalina connexa Palmer and Halley 1979 trilobite
Nyella ? clinolimbata Fritz 1968 trilobite | |
Mexicaspis radiatus n. sp., Ptarmiganoides hexacantha n. sp.
Mexicaspis radiatus n. sp. Palmer and Halley 1979 trilobite
Ptarmiganoides hexacantha n. sp. Palmer and Halley 1979 trilobite | |