Pachycephalosaurus Claw  

Pachycephalosaurus is a genus of bird pelvic dinosaurs (Ornithischia) from the group of Pachycephalosauria. He is the namesake and largest known representative of this group of dinosaurs.
Presumably he moved biped (on the elongated hind legs). Size and weight were estimated at 4.5 meters in length and around 450 kilograms.
Size of the replica around 5 cm x 3 cm x 2 cm.