Canadian Medical Guide > Organisms > Animals > Chordata > Chordata, Nonvertebrate Terms and Definitions




Chordata, Nonvertebrate

Medical Definition: A portion of the animal phylum Chordata comprised of the subphyla Cephalochordata, UROCHORDATA, and HYPEROTRETI, but not including the Vertebrata (VERTEBRATES). It includes nonvertebrate animals having a NOTOCHORD during some developmental stage.
Chordata, Nonvertebrate Categories.
Canadian Medical Guide Definition Hyperotreti - A group of invertebrate chordates (CHORDATA, NONVERTEBRATES) in the subphylum Craniota. They include the single order Myxiniformes, which comprise various HAGFISHES.
Canadian Medical Guide Definition Urochordata - A subphylum of chordates intermediate between the invertebrates and the true vertebrates. It includes the Ascidians.

Chordata, Nonvertebrate Medical Definitions and Terms

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