noun
pachycephalosaur
Refers to any dinosaur of the infraorder Pachycephalosauria, known for their thick, domed skulls. Used in paleontological contexts.
堅頭竜は頭の骨がとても厚いことで知られている。
Pachycephalosaurs are known for having very thick skull bones.
The Japanese name 堅頭竜 (けんとうりゅう) literally means 'hard-headed dragon', a calque of the scientific name Pachycephalosauria, which is derived from Greek 'pachys' (thick) and 'kephale' (head).