Fig. 4
From: Growth and skeletal structure of the parasitic zoantharian Savalia savaglia (Bertoloni, 1819)
(a) The concentric, tree-like ring arrangement of Savalia savaglia skeletal layers. (b) The conical processes, similar to spines, appear as depressions on the underside of the layer (c). Original drawings of Donati61 (d) and Lacaze-Duthiers7 (e) showing the skeletal structure and tissue organisation of S. savaglia. Scale bars: a, b: 200 μm; c: 100 μm.
