Word: pterygotus
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...have been 50 ft. long, not including the ten arms. Scars of combat with giant squids have been found on the hides of whales. Largest of known insects, extinct for 170,000,000 years, had a wingspread of 2 ft. 6 in. Largest of known arthropods was Pterygotus, 9 ft. long, which faintly resembled a lobster and roamed on the Silurian sea bottoms of 350,000,000 years...
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