urochord

Definitions of urochord
1

n primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva

Synonyms:
tunicate, urochordate
Types:
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ascidian
minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves
salp, salpa
minute floating marine tunicate having a transparent body with an opening at each end
doliolum
free-swimming oceanic tunicate with a barrel-shaped transparent body
larvacean
any member of the class Larvacea
appendicularia
free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates
sea squirt
ascidian that can contract its body and eject streams of water
Type of:
chordate
any animal of the phylum Chordata having a notochord or spinal column

n a notochord of a larval tunicate typically confined to the caudal region

Type of:
notochord
a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates

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