Spinorhabd

Definition

In D.; a spinulate acanthomicrorhabd (also the term “rod” is used) with four whorls of (sometimes reduced) spines arranged serially along the spicule (e.g., family Podospongiidae and genus Diacarnus); s. may develop dumbbell‐ or diplaster‐shaped apices, often slightly asymmetrical (diplospinorhabd; e.g., Diplopodospongia teliformis); or as whorl of long spines with center and spines clustering at one or both ends of the rhabd (aciculospinorhabd; e.g., Neopodospongia pagei); compare with discorhabd.

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