Fig. 15 in Middle and Late Jurassic tube-dwelling polychaetes from the Polish Basin: diversity, palaeoecology and comparisons with other assemblages

Fig. 15. Representative hard substrates colonized by the Middle and Upper Jurassic tube-dwelling polychaetes from the Polish Basin. A. Upper Bathonian hiatus concretion from Ogrodzieniec; sabellid Glomerula gordialis (Schlotheim, 1820) (GIUS 8-3751), indicated by arrows. B. Bajocian–Bathonian oncoid from Ogrodzieniec-Świertowiec; the entire oncoid is intensively encrusted by serpulids and sabellids (GIUS 8-3750). C. Callovian bivalve Ctenostreon proboscideum (Sowerby, 1820) from hardground of Zalas; black arrow indicates sabellid Glomerula gordialis, white arrow indicates juvenile serpulid Propomatoceros lumbricalis (GIUS 8-3589). D. Lower Kimmeridgian oyster from oyster shell beds of Małogoszcz; an arrow indicates sabellid Glomerula gordialis (Schlotheim, 1820) (GIUS 8-3747). E. Middle Bathonian oyster from soft muddy substrates of Gnaszyn Dolny; serpulid Propomatoceros lumbricalis (Schlotheim, 1820) is exemplified by arrows (black and white). White arrows point the specimens infested by the hydroid Protulophila gestroi (Rovereto, 1901) (GIUS 8-3730). F. Oxfordian sponge from Zalas; an arrow indicates serpulid Filogranula spongiophila sp. nov. (GIUS 8-3746). Scale bars 10 mm.