Trilobite tracks on quartzite bedding surface, lower member of the Silver Hill Formation, south side of structural dome near Helca. Beaverhead County, Montana. nd.
Summary
Album caption: Trilobite tracks on quartzite bedding surface, lower member of the Silver Hill Formation, south side of structural dome near Helca. Published as figure 6C.
Summary
Album caption: Trilobite tracks on quartzite bedding surface, lower member of the Silver Hill Formation, south side of structural dome near Helca.
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Related External Resources
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Bedrock geology of the Vipond Park 15-minute, Stine Mountain 7 1/2-minute, and Maurice Mountain 7 1/2-minute quadrangles, Pioneer Mountains, Beaverhead County, Montana. Geological Survey (U.S.) Bulletin 1625. 1988.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Zen, E-An Collection.
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