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Reply To: Delinment Lake Ammonite

Homepage › Forums › Fossils of the Pacific Northwest › Delinment Lake Ammonite › Reply To: Delinment Lake Ammonite

September 4, 2020 at 12:28 am #84990
Patrick Hsieh
Participant

There is a very helpful publication on ammonites in this area: https://pubs.usgs.gov/pp/1142/report.pdf

Page 11 mentions the Delintment Lake area being the Trowbridge Shale and dating from the Bathonian or Callovian ages of the Jurassic.

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