Alcatraz Penitentiary - SOLD 3.084" Showcase Concrete plesiosaurteeth 071" fossil Ginkgo cranei leaf

071" fossil Ginkgo cranei leaf from the Sentinel Butte Formation in North Dakota

• Side-seamed construction

ejecting material that becomes a new meteorite in turn

This specimen is a fragment of Brachiosaurus femur from the Morrison Formation in Utah

Alcatraz Penitentiary - SOLD 3.084" Showcase Concrete plesiosaurteeth 071" fossil Ginkgo cranei leafThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 3. 084" along the widest point. This specimen, from the famous Alcatraz Island, saw some 1,500 prisoners pass by it during the prison's operation. A certificate of authenticity is included.