Utah Septarian Slab 5-5.5" Trilobite Jewelry *Approximately 5

*Approximately 5

we sustain that Margaretia is an algae

5" wide x  7" tall

one-of-a-kind stunning sphere

Very Rare and Excellently preserved intact fossilized sponge found in the Wheeler shale Utah West Desert

Utah Septarian Slab 5-5.5" Trilobite Jewelry *Approximately 5*Approximately 3 8 to 1 2" thick and 5 to 5. 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 Formed during the Cretaceous Period (66 to 145 Million Years Ago)!