Fossil - Tubeworms (Serpulidae)
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Fossil - Tubeworms (Serpulidae)
A charming small fossil block with a beautiful calcareous shell of an ancient tubeworm and fossilized shell fragments. Tubeworms (Serpulidae) are a family of marine invertebrates belonging to the polychaetes. They build a calcareous shell for themselves in the shape of a tube. At the end of the tube are fan-shaped projections with which they filter plankton for food. When threatened, the tubeworm retracts into its tube. Fanworms (Sabellidae) have a similar structure, but their tube is softer. Tubeworms are common in sea areas where the water level varies with the tide, as they need moderate currents to bring plankton to their reach. Some tubeworm species live on coral reefs in symbiosis with a certain species of stony coral .
Early Cretaceous, ca. 145 - 100.5 million years ago, England. The size of the fossil sediment is ca. 62mm x 61mm x 34mm. Weight ca. 100g.
Note! Fossils are natural products that are millions of years old, so each one is unique. Therefore, colors, shapes and brightness may vary. The condition varies from fair to good and they have the wear, cracks and small chips typical of fossils.
