Where: Inyo County, California (37.0° N, 117.8° W: paleocoordinates 0.7° S, 94.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Amecephalus arrojosensis trilobite zone, Monola Formation, Delamaran (511.2 - 506.5 Ma)
• basal 15m of Monola Fm; Amecephalus arrojosensis Biozone
• group of beds-level stratigraphic resolution
Environment/lithology: offshore shelf; argillaceous, cherty/siliceous shale and limestone
Size class: macrofossils
Preservation: mold/impression
Reposited in the UNSM
Primary reference: F. A. Sundberg and L.B. McCollum. 2003. Early and Mid Cambrian Trilobites from the Outer-shelf Deposits of Nevada and California, USA. Palaeontology 46(5):945-986 [W. Kiessling/B. Brenneis]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 69506: authorized by Wolfgang Kiessling, entered by Benjamin Brenneis on 27.02.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
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Syspacephalus variosus Sundberg and McCollum 2003 trilobite total of 7 questionably assigned cranidia from 5 USNM Saline Range loc.
Onchocephalites claytonensis Sundberg and McCollum 2003 trilobite total of 100 specimens from 6 USNM Saline Range loc.
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Oryctocephalus sp. Walcott 1886 trilobite | |
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Wenkchemnia sulcata Rasetti 1951 trilobite total of 42 cranidia, 2 librigena, 10 pygidia from USNM 42011 and 42015
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