A subclass of sponges characterized by possessing amphidisc spicules.
From 'amphidisc' and Greek '-phora' (bearing or carrying). Created in taxonomic classification of sponges based on skeletal features.
Sponge taxonomy relies heavily on identifying these tiny spicule shapes—it's like forensic detective work under a microscope, where the structure of a millimeter-long needle determines an organism's entire classification.
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