Stygimoloch spinifer Galton & Sues, 1983
Dinosauria
Ornithischia
Pachycephalosauria
Pachycephalosauridae
Late Cretaceous
Hell Creek Fm (Maastrichtian)
Montana, US
Length: 2 m
The skull was equipped with long spines and bony nodes. It is possibly a juvenile version of Pachycephalosaurus.
May 30, 2014
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