Annelid Fossils Annelida

Annelid Fossils Because the annelids have soft bodies, fossilization is exceedingly rare. The best-preserved and oldest specimens come from Cambrian Lagerstätten such as the Burgess Shale of Canada, and the Middle Cambrian strata of the House Range in Utah. Putative Annelid ichnofossils are known from the Ediacara Hills of Australia and the White Sea Region of Russia. The Annelids are also well represented among the Pennsylvanian-age Mazon Creek fauna of Illinois.

Dickinsonia costata Class Polychaeta (?) Vendian (600 mya) White Sea, Russia	Annelid (?) Worm Middle Cambrian Wheeler Formation, Utah	Wiwaxia Possible Annelid Ancestor Marjum Formation, Utah	Annelid Predator Worm Middle Cambrian Marjum Formation, Utah

Coprinoscolex ellongimus Actually Phylum Echiura "Oldest Known Leech" Pennsylvanian Mazon Creek, Illinois	Didontogaster cordylina Class Polycheate Pennsylvanian Mazon Creek, Illinois	Astreptoscolex anasillosus Class Polycheate Pennsylvanian Mazon Creek, Illinois	Rhaphidiophorus hystrix Class Polycheate Pennsylvanian Mazon Creek, Illinois

Pieckonia helenae Class Polycheate Pennsylvanian Mazon Creek, Illinois	Esconites zelus Class Polycheate Pennsylvanian Mazon Creek, Illinois	Fossundecima konecniorum Polychaete Worm with Preserved Jaws Phylum: Annelida; Class Polychaeta Carboniferous Mazon Creek, Illinois

Class Polychaete Middle Cretaceous Haqel, Lebanon	Annelida; incertae sedis Class Polychaeta (?) Middle Cretaceous Lebanese Lagerstatt