Morphological description (show/hide)
| Mass of many repeatedly branching tube, each wiht syconoid organization and with a terminal naked osculum | | beige | | Each syconoid tube with single, terminal osculum | | slightly hipid due to diactines on teh end of radial tubes | | The atrial skeleton formed by large sagital triactines with a longer paired ray and tetractines of similar shape with a shorter, bent apical ray. The atrial apicules lay with their (facial) rays tagentially in the atrial wall, the short apical ray of tetractines reaches into the atrial space. Subatrial sagittal triactines with longer unpaired ray, which reaches at least two thirds of the sponge wall thickness and provide the only support for the proximal half of the short radial tubes. Tubar sagittal triactines are restricted to the distal half or third of the sponge wall, supporting mainly the distal cones of the short radial tubes. Few or even only one diactine is found in the distal cones, penetrating to the outside with about half of their length. | | No cortical skleton is present. | | Sagittal triactines and tetractines, sub-atrial sagittal triactines, choanomal triactines and diactines of the distal cones. |
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