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CAECILIAN, common name for wormlike amphibians that make up the order Gymnophiona. They are found in the warmer regions of the world, usually in underground burrows, but sometimes swimming in water. Caecilians, ranging from about 10 to 150 cm (about 4 to 60 in) long, are limbless and blind, with smooth skin folded in rings and tiny covered eyes; tentacles between the eyes and nostrils act as sensory organs. |