Gallissian, M.-F. (1983). Etude ultrastructurale du développement embryonnaiea chez Grantia compressa F (Porifera, Calcarea). Archives d'Anatomie microscopique. 72 (1): 59-75.
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Gallissian, M.-F.
1983
Etude ultrastructurale du développement embryonnaiea chez <i>Grantia compressa</i> F (Porifera, Calcarea).
Archives d'Anatomie microscopique.
72 (1): 59-75.
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The embryonic development of Grantia compressa is studied by means of the electron microscope from the blastula inside the mesenchyme to the mature amphi-blastula released in the excurrent canals. The study of the different cellular categories of the embryon shows the distribution of the vitellin inclusions and their evolution. The ultrastructure of the « cellules en croix » is not in favour of a photoreceptor part.
