Utah Septarian Slab 4.5-5" Trilobites 505 million years old)

505 million years old)

the presence of iron oxide minerals and the natural alteration processes

we maintain that Margaretia is an algae

showing any indication of an association with a hemichordate worm

Size: Approximately 8 1/2" x 6"

Utah Septarian Slab 4.5-5" Trilobites 505 million years old)*Approximately 3 8 to 1 2" thick and 4. 5 to 5" in diameter (at widest point). *Each Utah Septarian slab is unique! You will receive one similar in size and quality but pattern can vary. *Comes with Stand and Information Card. *A Slice of History from the Age of the Dinosaurs! *Septarian Nodules or Geodes Formed during the Cretaceous Period (66 to 145 Million Years Ago)!