Renata Manconi, Barbara Cadeddu, Fabio Ledda, Roberto Pronzato
Zookeys
Figure 34Fasciospongia cavernosa. a large specimen (over 20 cm) from the Kerkennah Islands (Tunisia) b stout spongin fibres in the skeletal network with very scarce inclusions at different magnifications (LM) c granulated (top) and cored (bottom) fibres d internal shape of the typical hollow (from which the species name) e, f rugose surface of skeletal fibres (SEM). c modified from Vacelet (1959) d modified from Schulze (1879a).
