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
formation: Alum Shale Formation (or Whitby Mudstone)
age: early Jurassic, Toarcian