 The Talpina animal bored into calcareous algae, corals, echinoid tests (shells), mollusc shells and the rostra of belemnites.Hederellids or Hederelloids are fossilized tubes, usually curved and between 0.1 and 1.8 mm wide, found from the Silurian to the Permian, and possibly in the Ordovician and Triassic.Their branching colonies may have been made by phoronids.