tunicata(n = noun.animal) subphylum tunicata, subphylum urochorda, subphylum urochordata, urochorda, urochordata - tunicates;
is a kind of phylum
is a member of chordata, phylum chordata
A grand division of the animal kingdom, intermediate, in some respects, between the invertebrates and vertebrates, and in modern classifications considered a subphylum of the vertebrates; called also
" Most of the species when mature are firmly attached to foreign substances, but have free-swimming larvæ which are furnished with an elongated tail and somewhat resemble a tadpole. In this state the larva has a urochord and certain other structures resembling some embryonic vertebrates. See