Glossary of Morphological and Anatomical Terms

zeilleriid - Long reflected loop not attached to dorsal septum in adult.
zeilleriid stage - See bilobate.
zygidium - Collarlike structure uniting lateral ridges on posterodorsal side of cardinal process and fitting within ventral umbo of some productides.
zygolophe - Lophophore in which each brachium consists of straight or crescentic side arm bearing two rows of paired tentacles.Fig.114.
zygolophus - See zygolophe.