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Leptocardia is a 11 letter word which starts with the letter L and ends with the letter A for which we found 1 definitions.

(n. pl.) The lowest class of Vertebrata including only the Amphioxus. The heart is represented only by a simple pulsating vessel. The blood is colorless; the brain renal organs and limbs are wanting and the backbone is represented only by a simple unsegmented notochord. See Amphioxus.
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