Definitions for leptocardia
  • Leptocardia (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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aa ad ae ai al ar at de do ed el er et id it la li lo od oe oi op or pa pe pi re ta ti to