Where: Esmeralda County, Nevada (37.6° N, 117.3° W: paleocoordinates 1.2° S, 93.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Amecephalus arrojosensis trilobite zone, Emigrant Formation, Delamaran (511.2 - 506.5 Ma)
• 9.5 to 15m above base of Emigrant Formation; Amecephalus arrojosensis Biozone
• group of beds-level stratigraphic resolution
Environment/lithology: offshore shelf; argillaceous siliciclastic sediments
Size class: macrofossils
Reposited in the USNM
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 69456: authorized by Wolfgang Kiessling, entered by Benjamin Brenneis on 26.02.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Tonopahella goldfieldensis n. gen. n. sp., Mexicella robusta
Tonopahella goldfieldensis n. gen. n. sp. Sundberg and McCollum 2003 trilobite paratypes USNM 517662-517678; total of 60 specimens (including paratypes) from 10 USNM Goldfield H. loc.
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Amecephalus arrojosensis Lochman 1952 trilobite | |
Onchocephalites claytonensis Sundberg and McCollum 2003 trilobite paratypes USNM 517566-517569; total of approximately 100 specimens from 13 USNM Goldfield Hills loc.
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Oryctocephalus americanus Sundberg and McCollum 2003 trilobite total of 8 cranidia and 1 pygidium from 6 USNM Goldfield Hills loc.
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