1 Dollar - Elizabeth II Pachycephalosaurus

Niue has functioned as a prolific licensing vehicle for the New Zealand-administered coin program since the 1990s, issuing hundreds of legal tender pieces under its name that were never intended for domestic circulation on an island of roughly 1,500 people. This Pachycephalosaurus dollar is one entry in a crowded paleontology-themed series marketed almost entirely to collector markets in Europe and North America.

Pachycephalosaurus itself was first formally described by Gilmore in 1931 from Hell Creek Formation material — the dome-skulled ornithischian whose function has been debated for decades, with current biomechanical research casting doubt on the head-butting hypothesis long accepted as settled.