Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  DetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record

Urheber*innen

Bobrovskiy,  Ilya
External Organizations;

Hope,  Janet M.
External Organizations;

Nettersheim,  Benjamin J.
External Organizations;

Volkman,  John K.
External Organizations;

/persons/resource/challman

Hallmann,  Christian
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Brocks,  Jochen J.
External Organizations;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in GFZpublic verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Bobrovskiy, I., Hope, J. M., Nettersheim, B. J., Volkman, J. K., Hallmann, C., Brocks, J. J. (2021): Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record. - Nature Ecology & Evolution, 5, 165-168.
https://doi.org/10.1038/s41559-020-01334-7


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008807
Zusammenfassung
The earliest fossils of animal-like organisms occur in Ediacaran rocks that are approximately 571 million years old. Yet 24-isopropylcholestanes and other C30 fossil sterol molecules have been suggested to reflect an important ecological role of demosponges as the first abundant animals by the end of the Cryogenian period (>635 million years ago). Here, we demonstrate that C30 24-isopropylcholestane is not diagnostic for sponges and probably formed in Neoproterozoic sediments through the geological methylation of C29 sterols of chlorophyte algae, the dominant eukaryotes at that time. These findings reconcile biomarker evidence with the geological record and revert the oldest evidence for animals back into the latest Ediacaran.