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Remnants of the free cheeks can also be seen below the trilobite molt
This very unique and rare Elrathia kingii trilobite mass mortality plate was found in the Wheeler Shale
key in Septarian's Formation
*Approximately 3/8 to 1/2" thick and 5 to 5
Petrified Wood
Utah Septarian Slab with Fossil cross-section Bowls Remnants of the free cheeks*An approximate 1 2" wide and 5 5 1 2" in diameter septarian slab with a visible Fossil cross section where a type of Fossil Brachiopod rested, key in it's formation. *Unique Slice of History from the Age of the Dinosaurs. Utah Septarian Nodules or Geodes Formed during the Cretaceous Period (66 to 145 Million Years Ago)! *Comes with Stand and Information Card.