CollectA 88629 - Pachycephalosaurus

10 x 5.7 cm
Name: Pachycephalosaurus ‭(‬thick headed‭ lizard‭)‬.
Named By: Barnum Brown‭ & ‬Erich Maren Schlaikjer‭ ‬-‭ ‬1943.
Synonyms: Tylosteus,‭ ‬Troodon wyomingensis.‭ ‬Possibly also Dracorex and Stygimoloch if these two genera do indeed represent juvenile forms.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Pachycephalosauridae,‭ ‬Pachycephalosaurinae,‭ ‬Pachycephalosaurini.
Species: P.‭ ‬wyomingensis‭ (‬type‭)‬.
Diet: Herbivore/Omnivore‭?
Size: ‭U‬ncertain due to lack of remains,‭ ‬but comparison to more complete genera has yielded estimates of around‭ ‬4.5‭ ‬meters long.
Known locations: USA.
Time period: Maastrichtian of the Cretaceous.