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1. Rocks & Minerals

   Non-fossil specimens of geologic origin.

   14.7k

   posts

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   • Canyon Diablo metiorite?
   • By DPS Ammonite, 3 hours ago
2. Geology

   Geology, as may be applied to paleontology.

   1.3k

   posts

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   • Not from around here!
   • By digit, Sunday at 02:20 AM