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Odp: [dinosaur] Plesiosaur queries




Dnia 24 listopada 2020 05:03 John Schneiderman <john-schneiderman@cox.net> napisaÅ(a):

formation: Alum Shale Formation (or Whitby Mudstone)

age: early Jurassic, Toarcian

Alum Shale Formation is Cambrian to Lower Ordovician in age, and famous for its Orsten-type preserved fossils. Outcroups are in Scandinavia.