BST102 Fossil stromatolite slab, polished on one side.
This museum quality specimen has been cut at right angles to the bedding and displays the columnar structure beautifully !
From the Miraflores Formation, El Molino, Potosí, Bolivia, South America.
Age approx. 70 million years (Cretaceous)
Dimensions approximately 340 mm x 180 mm x 9.5 mm
Weighs 1,254 grams