Oliveira, E.A.G. Patronelli, D.L. Zamponi, M.O. Morphological and functional study of the marginal sphincter of the sea anemones Phymactis clematis and Aulactinia marplatensis from intertidal of Mar de Plata, Argentina Subjects--Topical Terms: ANEMONA-DO-MARANIMAL AQUÁTICOMORFOLOGIA ANIMAL