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Clonk Head-Butt Pachy T-ShirtShow off your love of paleontology with this retro, distressed inspired design featuring two Pachycephalosaurus locking their thick domed skulls beneath the bold "CLONK" caption. Native to the Late Cretaceous Period, these iconic dome headed dinosaurs are often associated with head butting behavior, making this navy blue line art graphic on a natural cream shirt a fun tribute to one of prehistory's most recognizable herbivores. Made from 100% ring

it embodies the pioneering spirit of the Mesozoic skies

Earth science fans

ornamental illustration style inspired by classic maritime and natural history art

slightly distressed retro finish

carrying a small frog for a playful prehistoric twist

it blends retro natural-history illustration with lighthearted humor

this illustration pays tribute to the Late Cretaceous period (roughly 68–66 million years ago)

rendered in soft cream tones against a deep navy background

retro-scientific look—perfect for lovers of geography

and field observers

making it a striking yet understated statement for dinosaur enthusiasts

mustard yellow