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BackgroundMetamorphic remodeling of the nervous system and its organization in juvenile may shed light on early steps of… Expand BackgroundThe organization and development of the nervous system has traditionally been used as an important character for… Expand BackgroundInferences concerning the evolution of invertebrate nervous systems are often hampered by the lack of a solid data base… Expand The nervous system organization is considered a phylogenetically important character among metazoans. The phylum Phoronida is… Expand The microscopic anatomy and ultrastructure of the nervous system of Phoronopsis harmeri was investigated using histological… Expand The process of sperm development in Phoronopsis harmeri was studied by electron microscopy. Developing spermatogenical cells are… Expand The Phoronida are a coelomate phylum consisting of only two genera and about 12–15 described species. Phoronids probably… Expand Abstract The primitive invertebrate, Phoronopsis viridis , of the phylum Phoronida, has intra-cellular hemoglobins composed of… Expand The enigmatic lophophoral organs of phoronids are demonstrated to by accessory sex glands. In the hermaphroditic Phoronis… Expand Individuals of the species Phoronopsis viridis Hilton exhibit an even distribution within their colonies. The distance between… Expand