Marine Biodiversity » Marine Sponges » Calcarea » Calcarea Classification » Subclass Calcinea | |||||||||||
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Definition: Choanosomal skeleton composed of bundles of diapsons (tuning-fork triradiates) without any rigid structure; cortical skeleton composed chiefly of a superficial layer of overlapping calcareous scales and an internal layer of free calcareous plates. Scope: Single genus. Reviews: Borojevic et al. (1990). Genera: |
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