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The wiring for walking developed long before fish left the sea

Neural circuitry for walking may have evolved in ancient fish as early as 420 million years ago

skates

SKATING AWAY  Little skates are cartilaginous fish that use their pelvic fins to amble along the ocean floor.

Jun An-Chen

By Dan Garisto

- More than 2 years ago

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These fins were made for walking, and that’s just what these fish do — thanks to wiring that evolved long before vertebrates set foot on land.