Where: Esmeralda County, Nevada (37.7° N, 117.5° W: paleocoordinates 1.0° S, 93.5° 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 of lower Middle Cambrian
• group of beds-level stratigraphic resolution
Environment/lithology: offshore shelf; lithified, silty lime mudstone and lithified, concretionary lime mudstone
Size class: macrofossils
Preservation: mold/impression
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 69414: authorized by Wolfgang Kiessling, entered by Benjamin Brenneis on 26.02.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Tonopahella goldfieldensis Sundberg and McCollum 2003 trilobite total of 55 specimens (incl. paratypes) from 9 USNM Split Mt. loc.
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Oryctocephalus "sp. A" Walcott 1886 trilobite
Oryctocephalus americanus Sundberg and McCollum 2003 trilobite total of 38 specimens (including holo- and paratypes) from 13 USNM Split Mt. loc.
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