Anthaspidellidae is an extinct family of sponges whose
dendroclone
Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators.
Sponge spicules are made of calcium carbo ...
spicules form ladder-like
trab A trab is a structural element within a sponge formed by the fusion of dendroclones.
In the Anthaspidellidae, when spicules
Spicules are any of various small needle-like anatomical structures occurring in organisms
Spicule may also refer to:
*S ...
s.
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References
Sponge families
Tetractinomorpha
{{demosponge-stub