Figure 6 in The genus Adeonella (Bryozoa, Ascophora) in the Mediterranean, with description of two new living species and rediscovery of a fossil one

Figure 6. Adeonella pallasii (Heller, 1867). (A–C) Proximal part of a slender twisted branch from anAdriatic population (Lastovo, 20–30 m), Recent. (A) Single frontal avicularia are present only on some zooids of the marginal rows. Scale bar: 500 µm. (B) View of an area slightly proximalthan in (A), with frontal avicularia on several zooids. Scale bar: 500 µm. (C) A more proximal part with frontal calcification occluding nearly all orifices and spiramina leaving only visible the small frontal avicularia. Scale bar: 500 µm. (D,E) Living specimen from the Strait of Scarpanto (Aegean Sea), 29–33 m. (D) Some zooids with up to three frontal avicularia. Note also the development of frontal tubercles. Scale bar: 500 µm. (E) Bifurcation showing a concentration of frontal raised avicularia at the branching point. Scale bar: 500 µm. (F) Dead specimen from