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Lab number
USGS-3534
Material dated
Shell
Taxa dated
freshwater, gastropod
Type of date
Geological
Locality
Lassen
Date uploaded
January 15, 2024
Updater
Wyoming team
Date updated
December 31, 2020
Normalized Age
7260 ± 58
Context
From "coquina" bed (mostly freshwater snails, few fish teeth, and possible ostracods) on basalt flow exposed in Bly Tunnel outlet trench dug in early 20s on SE lakeshore, coll by M.G. Sawlan

References