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Leptocardia   Listen
noun
Leptocardia  n. pl.  (Written also Leptocardii)  (Zool.) 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.






Collaborative International Dictionary of English 0.48







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