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by alaska_nps_geology
Ammonite Zemistephanus charlottensis(?) from the Middle Jurassic (170 Ma) Tuxedni Group, Lake Clark National Park and Preserve, Alaska. The fossil was collected whole, but during transport it fell apart into about 20 pieces. Lots of glue put "Humpty Dumpty" back together again. (maximum length is 9.5 cm)