30456 - Rare 0.40 Inch Amecephalus cf. packi Middle Cambrian Trilobite - Nevada, USA
30456 - Rare 0.40 Inch Amecephalus cf. packi Middle Cambrian Trilobite - Nevada, USA 30456 - Rare 0.40 Inch Amecephalus cf. packi Middle Cambrian Trilobite - Nevada, USA 30456 - Rare 0.40 Inch Amecephalus cf. packi Middle Cambrian Trilobite - Nevada, USA

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30456 - Rare 0.40 Inch Amecephalus cf. packi Middle Cambrian Trilobite - Nevada, USA

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Species
Amecephalus cf. packi
Age
Middle Cambrian,(~509 Million Years)
Location
Pioche, Nevada (USA)
Formation
Chisholm Shale
Size
10.2 mm   •    in
Weight
23 g   •    oz
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Description
Amecephalus, Walcott 1924 (trilobite)
Trilobita - Alokistocaridae
 
PaleoDB taxon number: 20273

Parent taxon: Ptychopariacea according to F. A. Sundberg and L. B. McCollum 2000

See also Jell and Adrain 2002, Mason 1935, Palmer and Halley 1979, Sepkoski 2002 and Sundberg and McCollum 2000

Sister taxa: Eokochaspis, Kochina, Mexicella, Piochella

Subtaxa: Amecephalus arrojosensis, Amecephalus strangulatus

View classification

Ecology: fast-moving low-level epifaunal deposit feeder

Environments: marine (5 collections), (2), carbonate (1), transition zone/lower shoreface (1)

Age range: 513.0 to 488.3 Ma

Distribution:

• Cambrian of Canada (7: British Columbia, Northwest Territories, Yukon Territory collections), Mexico (1), United States (6: Nevada, Utah)
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