Where: California (36.8° N, 117.1° W: paleocoordinates 1.2° S, 94.5° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Plagiura-Poliella trilobite zone, Pyramid Shale Member (Carrara Formation), Delamaran (513.0 - 505.0 Ma)
• Aside from those occurrences only a single specimen questionably identified as Mexicella? stator (Walcott) was found on a float piece from the middle part of this member in the Titanothere Canyon section in the Grapevine Mountains.
• member-level stratigraphic resolution
Environment/lithology: coastal; green shale and brown siltstone
•with brown and maroon siltstone and shale with minor
•amounts of quartzite and limestone.
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 149615: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 16.08.2013, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Mexicella robusta Sundberg and McCollum 2000 trilobite |