Fig. 4 in Middle and Late Jurassic tube-dwelling polychaetes from the Polish Basin: diversity, palaeoecology and comparisons with other assemblages

Fig. 4. Serpulid polychaetes from the Jurassic of Poland. A. Metavermilia? sp. encrusting a belemnite rostrum from the middle Bathonian of Gnaszyn Dolny (GIUS 8-3730/9). B–E. Filogranula runcinata (Sowerby, 1829), specimens encrusting: an oncoid from the upper Bajocian–lower Bathonian of Ogrodzieniec-Świertowiec (B, GIUS 8-3750/3); a hiatus concretion from the upper Bajocian of Mokrsko (C, GIUS 8-3751/4); shell fragments from the middle Bathonian of Gnaszyn Dolny (D, GIUS 8-3730/10), the Callovian of Zalas (E, GIUS 8-3589/6). F, G. Filogranula spongiophila sp. nov. encrusting sponge fragments from the Oxfordian of Zalas (F, holotype, GIUS 8-3746/2; G, paratype, GIUS 8-3746/3). Scale bars 1 mm.