The team also spotted the worms that possibly created this structure inside the network. These worms were determined to be ...

12. Dwellings and structures: Some marine worms secrete calcareous tubes in which they live. The fossil is not of the organism, but of a structure it built. Even more elaborate dwellings have been ...

Clusters of fossil serpulid worm tubes, like these Rotularia from the British Eocene, are common fossils in many Mesozoic and Cenozoic marine rocks The Museum’s collection of fossil annelids is both ...

They show an organism was there, but are not the actual organism itself (which would be a body fossil). Dinosaur footprints and worm burrows are examples of trace fossils, as are coprolites ...

Scientists revived a 46,000-year-old microscopic worm from Siberian permafrost ... was discovered at a depth of 40 meters inside a fossilized burrow of Arctic squirrels. This depth protected ...