Wade, Mary. (1972). Dickinsonia: Polychaete worms from the late Precambrian Ediacaran fauna, South Australia. Memoirs of the Queensland Museum. 16(2): 171-190, pl. 5-7.

52088

Wade, Mary

1972

16(2): 171-190, pl. 5-7

Publication

http://biodiversitylibrary.org/page/48735419

World Polychaeta Database (WPolyDb). Also linked at http://biostor.org/reference/152765

Dickinsonia is an extinct genus of errant polychaetes which dominated the South Australian late Precambrian Ediacara fauna. Like Recent Spinther they were characterized by the anterior body segment being fused around and in front of the prostomium. Neuropodia were reduced and phylogenetically lost in Dickinsonia, probably as the worms outgrew the range of width at which these appendages could function efficiently for locomotion. Freed from reliance on neuropodia, the widest worms ever known were produced, and segment length shortened. New material allows the removal of some of the specimens initially assigned to D. tenuis Glaessner and Wade to the new species D. lissa and D. brachina.

Australia

Paleontology, Fossils, Paleobiology

Annelida

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