Tags

Type your tag names separated by a space and hit enter

Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals.
Science. 2018 09 21; 361(6408):1246-1249.Sci

Abstract

The enigmatic Ediacara biota (571 million to 541 million years ago) represents the first macroscopic complex organisms in the geological record and may hold the key to our understanding of the origin of animals. Ediacaran macrofossils are as "strange as life on another planet" and have evaded taxonomic classification, with interpretations ranging from marine animals or giant single-celled protists to terrestrial lichens. Here, we show that lipid biomarkers extracted from organically preserved Ediacaran macrofossils unambiguously clarify their phylogeny. Dickinsonia and its relatives solely produced cholesteroids, a hallmark of animals. Our results make these iconic members of the Ediacara biota the oldest confirmed macroscopic animals in the rock record, indicating that the appearance of the Ediacara biota was indeed a prelude to the Cambrian explosion of animal life.

Authors+Show Affiliations

Research School of Earth Sciences, Australian National University, Canberra ACT 2601, Australia. ilya.bobrovskiy@anu.edu.au jochen.brocks@anu.edu.au.Research School of Earth Sciences, Australian National University, Canberra ACT 2601, Australia.Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow 117997, Russia.Max Planck Institute for Biogeochemistry, Jena 07745, Germany.Max Planck Institute for Biogeochemistry, Jena 07745, Germany. MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen 28359, Germany.Research School of Earth Sciences, Australian National University, Canberra ACT 2601, Australia. ilya.bobrovskiy@anu.edu.au jochen.brocks@anu.edu.au.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30237355

Citation

Bobrovskiy, Ilya, et al. "Ancient Steroids Establish the Ediacaran Fossil Dickinsonia as One of the Earliest Animals." Science (New York, N.Y.), vol. 361, no. 6408, 2018, pp. 1246-1249.
Bobrovskiy I, Hope JM, Ivantsov A, et al. Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals. Science. 2018;361(6408):1246-1249.
Bobrovskiy, I., Hope, J. M., Ivantsov, A., Nettersheim, B. J., Hallmann, C., & Brocks, J. J. (2018). Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals. Science (New York, N.Y.), 361(6408), 1246-1249. https://doi.org/10.1126/science.aat7228
Bobrovskiy I, et al. Ancient Steroids Establish the Ediacaran Fossil Dickinsonia as One of the Earliest Animals. Science. 2018 09 21;361(6408):1246-1249. PubMed PMID: 30237355.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals. AU - Bobrovskiy,Ilya, AU - Hope,Janet M, AU - Ivantsov,Andrey, AU - Nettersheim,Benjamin J, AU - Hallmann,Christian, AU - Brocks,Jochen J, Y1 - 2018/09/20/ PY - 2018/04/02/received PY - 2018/08/06/accepted PY - 2018/9/22/entrez PY - 2018/9/22/pubmed PY - 2018/10/27/medline SP - 1246 EP - 1249 JF - Science (New York, N.Y.) JO - Science VL - 361 IS - 6408 N2 - The enigmatic Ediacara biota (571 million to 541 million years ago) represents the first macroscopic complex organisms in the geological record and may hold the key to our understanding of the origin of animals. Ediacaran macrofossils are as "strange as life on another planet" and have evaded taxonomic classification, with interpretations ranging from marine animals or giant single-celled protists to terrestrial lichens. Here, we show that lipid biomarkers extracted from organically preserved Ediacaran macrofossils unambiguously clarify their phylogeny. Dickinsonia and its relatives solely produced cholesteroids, a hallmark of animals. Our results make these iconic members of the Ediacara biota the oldest confirmed macroscopic animals in the rock record, indicating that the appearance of the Ediacara biota was indeed a prelude to the Cambrian explosion of animal life. SN - 1095-9203 UR - https://www.unboundmedicine.com/medline/citation/30237355/Ancient_steroids_establish_the_Ediacaran_fossil_Dickinsonia_as_one_of_the_earliest_animals_ L2 - https://www.sciencemag.org/cgi/pmidlookup?view=long&pmid=30237355 DB - PRIME DP - Unbound Medicine ER -