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Wikipedia definition
1. PolacanthusPolacanthus, deriving its name from the Ancient Greek poly-/πολυ- "many" and acantha/ακανθα "thorn" or "prickle", was an early armored, spiked, plant-eating ankylosaur from the early Cretaceous period. Early depictions often gave it a very vague head as it was only known from the rear half of the creature. It lived 130 to 125 million years ago in what is now western Europe.
Read “Polacanthus” on English Wikipedia
Read “ポラカントゥス” on Japanese Wikipedia
Read “Polacanthus” on DBpedia

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