2.76" (7.1 cm) tall, 1.66" (4.21 cm) wide, 0.78" thick (2 cm); Hypacrosaurus astragalus (ankle) bone from the Two Medicine Formation of Pondera County Montana. Here is a unique dinosaur fossil, these are an uncommon find. No restoration. 75 million years old.
Authentic, legally collected fossils for sale.