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"The jumper chisel." — Encyclopedia Britannica, 1893

Chisel

"The jumper chisel." — Encyclopedia Britannica, 1893

"The bodies of these animals are compressed laterally, and curved upon the sides; the eyes are immovable, their feet are directed partly forwards and partly backwards." — Williams, 1889

Shore-jumper

"The bodies of these animals are compressed laterally, and curved upon the sides; the eyes are immovable,…