A very nice slab of agatized dinosaur bone from the Utah/Colorado Morrison Formationwhich dates to the late Jurassic sequence (155 million years ago - 148 million years ago) .99 ounces and approximately 2 1/2 inches wide at point to point at the center x 1 3/4 high at the center and 5 mm in thicknessVery fine small cells surrounded by dark spider web structure. Simply lovely.Photographed wet in daylight to show color and also dry to easier see any fractures or v...oids From a rock hounds 60 year collection of material Please check 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.