Cretaceous Lebanese Polychaete Worm Fossil
Lophotrochozoa; Phylum Annelida; Class Polychaeta
Time Period: Middle Cretaceous, Cenomanian Stage
(25.4mm=1 inch): 35 mm long on a 110 mm by 83 mm matrix
is a rare worm fossil of a member of the Polychaetae, or Bristleworms,
coming from the Cretaceous of Lebanon. Known for its incredibly
well preserved fish and crustaceans, the sublithographic limestone
of Lebanon also preserved incredible detail of this delicate worm.
polychaete worms are related to earthworms and leeches, the most
well known members of the Phylum Annelida. They derive their common
name from the setae (or chaetae – bristles) on each side of
the body. The Polychaetae can trace their fossil record back to
the 520 million year old Burgess Shale where examples such as Burgessochaeta
and Canadia have been preserved.
fossil pictures to enlarge