urocordés[Français]

nom
1 : primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
2 : primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
3 : primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
4 : primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva