A very nice slab of dinosaur bone from the Utah/Colorado Morrison Formationwhich dates to the late Jurassic sequence (155 million years ago - 148 million years ago) .63 ounces and approximately 2 inches wide x 1 3/8 inches in height at the tall end then 5/8 inches in height at the short end and 4 mm in thicknessA delightful piece with well defined small cells and great structure. Nice combination of colorsFrom a rock hounds 60 year collection of material Please che...ck our other auctions for more dinosaur bone and petrified wood. Combined shipping available for multiple purchases to save you money. Please wait for an invoice. Shipping charges will be calculated and available options offered on the invoice.