title: SEM study of semi-oriented tube microstructures of Serpulidae (Polychaeta, Annelida): implications for the evolution of complex oriented microstructures.
abstract: Semi-oriented microstructures represent an intermediate state between isotropic and complex oriented microstructures of serpulids. Semi-oriented microstructures are apparently unique to serpulids, indicating that there may have been unique aspects in the evolution of their biomineralization system. The occurrence of semi-oriented microstructures in serpulids supports the hypothesis that complex oriented microstructures are derived from isotropic microstructures via evolution of a biochemical crystal orientation control mechanism.
authors: Department of Geology, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia. olev.vinn@ut.ee
authors: Olev
authors: O
authors: Vinn
mesh_terms: D000818:Animals; D008855:Microscopy, Electron, Scanning; D011077:Polychaeta / Q000648:ultrastructure*