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Carved in stone: only jawed vertebrates have 3 semicircular ducts in their inner ear. Not anymore! http://t.co/ZEEfKwXf2b
Carved in stone: only jawed vertebrates have 3 semicircular ducts in their inner ear. Not anymore! http://t.co/ZEEfKwXf2b
Carved in stone: only jawed vertebrates have 3 semicircular ducts in their inner ear. Not anymore! http://t.co/ZEEfKwXf2b
Carved in stone: only jawed vertebrates have 3 semicircular ducts in their inner ear. Not anymore! http://t.co/ZEEfKwXf2b
Carved in stone: only jawed vertebrates have 3 semicircular ducts in their inner ear. Not anymore! http://t.co/ZEEfKwXf2b