A New Period for the Geologic Time Scale

@article{Knoll2004ANP,
  title={A New Period for the Geologic Time Scale},
  author={Andrew H. Knoll and Malcolm R. Walter and Guy M. Narbonne and Nicholas Christie‐Blick},
  journal={Science},
  year={2004},
  volume={305},
  pages={621 - 622}
}
The geologic time scale is in need of an update, given that the last modification took place in 1891. In their Perspective, [Knoll and colleagues][1] announce the proud addition of a new interval to the geologic time scale, the Ediacaran Period, by the International Union of Geological Sciences. [1]: http://www.sciencemag.org/cgi/content/full/305/5684/621 
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References

SHOWING 1-10 OF 20 REFERENCES
Age of Neoproterozoic bilatarian body and trace fossils, White Sea, Russia: implications for metazoan evolution.
TLDR
A uranium-lead zircon age for a volcanic ash interstratified with fossil-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White Sea region indicates that a diverse assemblage of body and trace fossils occurred before 555.3 +/- 0.3 million years ago, making co-occurring trace fossils the oldest that are reliably dated.
Stable isotopic evidence for methane seeps in Neoproterozoic postglacial cap carbonates
TLDR
Carbon isotopic and petrographic data from a Neoproterozoic postglacial cap carbonate in south China are reported that provide direct evidence for methane-influenced processes during deglaciation, lending strong support to the hypothesis that methane hydrate destabilization contributed to the enigmatic cap carbonates deposition and strongly negative carbon isotopic anomalies following Neopropriaterozoic ice ages.
Geology
STUDENTS of Geology will welcome this third and much enlarged edition of Prof. Green's excellent text-book, though they may at first sight regret the exchange of the old convenient manual form of the
The snowball Earth hypothesis: testing the limits of global change
The gradual discovery that late Neoproterozoic ice sheets extended to sea level near the equator poses a palaeoenvironmental conundrum. Was the Earth's orbital obliquity > 60° (making the tropics
Life after snowball: The oldest complex Ediacaran fossils
Newly discovered fronds of the Ediacaran index fossil Charnia from the Drook Formation of southeastern Newfoundland are the oldest large, architecturally complex fossils known anywhere. Two species
Serengeti II : dynamics, management, and conservation of an ecosystem
The aim of this text is to provide an up-to-date understanding of the Serengeti-Mara ecosystem in East Africa, home to one of the largest and most diverse populations of animals in the world.
PHOSPHATIZED ANIMAL EMBRYOS FROM THE NEOPROTEROZOIC DOUSHANTUO FORMATION AT WENG'AN, GUIZHOU, SOUTH CHINA
TLDR
Phosphorites of the uppermost Neoproterozoic Doushantuo Formation exposed at Weng'an, South China, contain globular microfossils characterized by distinctively sculpted outer coverings and precise patterns of cell division, which support their reinterpretation as the eggs and embryos of early animals.
Ecology
  • S. Goldhor
  • Environmental Science
    The Yale Journal of Biology and Medicine
  • 1964
The availability of carbon (C), nitrogen (N) and sulfur (S) for the vegetation has increased in many ecosystems on earth since beginning of the industrial revolution. The change in availability of
Biotic Interactions in the Tropics
TLDR
The attempt to understand the maintenance of high diversity in tropical regions, which remains one of the most significant unexplained observations in ecological studies.
...
1
2
...