A complex microbiota from snowball Earth times: Microfossils from the Neoproterozoic Kingston Peak Formation, Death Valley, USA
AUTOR(ES)
Corsetti, Frank A.
FONTE
The National Academy of Sciences
RESUMO
A thin carbonate unit associated with a Sturtian-age (≈750–700 million years ago) glaciogenic diamictite of the Neoproterozoic Kingston Peak Formation, eastern California, contains microfossil evidence of a once-thriving prokaryotic and eukaryotic microbial community (preserved in chert and carbonate). Stratiform stromatolites, oncoids, and rare columnar stromatolites also occur. The microbial fossils, which include putative autotrophic and heterotrophic eukaryotes, are similar to those found in chert in the underlying preglacial units. They indicate that microbial life adapted to shallow-water carbonate environments did not suffer the significant extinction postulated for this phase of low-latitude glaciation and that trophic complexity survived through snowball Earth times.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=153566Documentos Relacionados
- Anesthesia from Colonial Times: A History of Anesthesia at the University of Pennsylvania
- The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis
- A new species of Eupithecia Curtis (Lepidoptera, Geometridae) from the Azapa Valley, northern Chile
- FOREST DYNAMICS OF A SUB-XEROPHILOUS VEGETATION FORMATION IN CENTRAL PERU - CHANCHAMAYO VALLEY, PERU
- The environmental risk as a culture in the Sinos Valley, Brazil