Araucaria mirabilis (Spegazzini)
Silicified cone from a Cretaceous, Monkey Puzzle tree. Cut in half to show the internal structure. Lovely preservation and nice detail under magnification.
Lower Cretaceous, Cerro Alto Beds.
Cerro Quadrado, Windhausen, Patagonia, Argentina.
Cone : 5.5 x 3 x 2.8 cm.
