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Fig. 4 | Frontiers in Zoology

Fig. 4

From: Insights into the structure and morphogenesis of the giant basal spicule of the glass sponge Monorhaphis chuni

Fig. 4

Surface of pristine spicules (extracted from the sponge that was alive when collected) of petrosid desmosponge. a Spicule with uncomplete layer of silica showing natural steep faces of newly deposited silica layer; b details of a to show vertical surface limiting the newly deposited silica layer. c Another spicule surface with two superimposed uncomplete layers of newly deposited silica limited by steep faces. d Surface of another spicules with superimposed three new incipient layers of silica deposited on the earlier surface of the spicule that are limited by steep faces

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Frontiers in Zoology

ISSN: 1742-9994