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Science (American Association for the Advancement of Science), 2018-09, Vol.361 (6408), p.1198-1199
Ort / Verlag
United States: The American Association for the Advancement of Science
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Steroid biomarkers show that the Ediacaran fossil Dickinsonia was an animal
The Ediacara biota are a diverse assemblage of macroscopic body forms that appear in the sedimentary rock record between 570 million and 541 million years ago. First recognized in Namibia and Australia, these remarkable organisms have since been found in Russia, China, Canada, Great Britain, and other regions. Although they immediately preceded the rapid appearance and diversification of animals in the Cambrian (541 million to 485 million years ago), their position within the tree of life has long been a puzzle. Some Ediacaran fossils appear segmented, but most lack obvious characters such as appendages, a mouth, or a gut that might link them to animal clades. On page 1246, Bobrovskiy et al. ( 1 ) use biomarkers to confidently assign at least one Ediacaran group, Dickinsonia and related taxa, to the Metazoa (animals).