Molecular patterning during the development of Phoronopsis harmeri reveals similarities to rhynchonelliform brachiopods

摘要

Gross morphology and phylogenetic position of . Phylogenetic position of phoronids and [ ]. Characteristic actinotroch larva with 12 tentacles. Anterior region of with a terminal anterior lophophore, used for collection of food particles and respiration, and a posterior trunk. Ampulla of a mature female animal with visible oocytes. Anterior is to the top