"Leptocardia" is a word in ENGLISH
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.
Be thankful when you find yourself worrying about the smallest things, for it often means there aren't any bigger things to truly worry about.
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Night. A sleeping couple is lying in a bed. Door bell rings. A couple wakes up.Woman: "Quick! My husband is back!"Man jumps out from a window. Flying down he starts to think: "Shit! But I am the husband!"
The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
Read the complete definitionA fishlike creature (Amphioxus lanceolatus), two or three inches long, found in temperature seas; -- also called the lancelet. Its …
Read the complete definitionThe lancelet. See Amphioxus.
Read the complete definitionThe lowest group of vertebrates; -- so called from the cirri around the mouth; the Leptocardia. See Amphioxus.
Read the complete definitionA cavity formed by the invagination of the outer wall of the body, as the atrium of an amphioxus and …
Read the complete definitionA small fishlike animal (Amphioxus lanceolatus), remarkable for the rudimentary condition of its organs. It is the type of the …
Read the complete definitionOne of the apertures of the gill of an ascidian, and of Amphioxus.
Read the complete definitionOne of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or …
Read the complete definition