Collecting Fossil Plants At Aldrich Hill, Nevada

A collector gets down to business at an outcrop of the middle Miocene Aldrich Station Formation along the north side of Aldrich Hill, Nevada. The regularly bedded, tan to reddish brown and cream-colored diatomaceous mudstones and shales here yield infrequent to rather common 13 to 12.5-million-year-old carbonized impressions of conifer winged seeds and giant sequoia foliage, in addition to evergreen live oaks and many deciduous varieties.

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