New way to read the record suggests abrupt extinction
Article Abstract:
Paleontologists Charles Marshall and Peter Ward claim that a meteor impact 65 million years ago did cause an abrupt mass extinction. They analyzed the fossil record with a new statistical method that uses a fossil's abundance in the record to predict the gap between the last known specimen and its extinction.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
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A volcanic crisis for ancient life?
Article Abstract:
Researcher Paul Renne and his colleagues have used isotopic dating to show that the great mass extinction and a series of volcanic eruptions in Northern Siberia both occurred about 250 million years ago. Researchers are questioning the accuracy of the dating.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1995
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Geoscientists contemplate a fatal belch and a living ocean
Article Abstract:
Research topics at the 1995 Geological Society of America meeting included a theory that a surge of deep-sea carbon dioxide caused the extinctions at the end of the Permian period and a study of the effect of an ancient meteorite impact on the Atlantic Ocean.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1995
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