Assessment of serpulid-hydroid association through the Jurassic: A case study from the Polish Basin
Fig 6
Aggregation of several serpulid tubes on two single oyster valves from the Middle Bathonian of Gnaszyn Dolny, Polish Jura, a number of which (arrowed) possess traces after bioclaustrated hydroids.
A. An aggregation of six (arrowed) serpulids with Protulophila gestroi, GIUS 8-3730/6. B-C. Magnified shell areas showing bioclaustrated serpulid tubes, GIUS 8-3730/6a and GIUS 8-3730/6b, respectively. D. Aggregation of five (arrowed) serpulid specimens with Protulophila gestroi, GIUS 8-3730/7. E. Magnified part showing very dense aggregation of tubes on a small substrate surface bearing indistinct bioclaustrated traces (GIUS 8-3730/7a). Scale bars equal 1 cm.
