The biological history of a seaway
Article Abstract:
Three papers have advanced understanding of extinction, species formation and species diversity. The papers are about Pacific and Atlantic populations of marine species that were separated by a land bridge that formed between North and South America about 3 million years ago.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1993
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Late Permian extinctions
Article Abstract:
Nutrient concentration fluctuations were likely to have played a key role in mass extinctions and in the selection of marine invertebrate taxa that were resistant to extinction. Possible causal mechanisms of nutrient concentration fluctuations in mass extinction are examined.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
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Animal origins
Article Abstract:
Research on the nucleotide sequences of 7 genes from 16 living phyla indicate that the major phyla originated and diversified much earlier than previously believed. The new research indicates animals appeared between 1000 and 1200 million years ago (Ma) rather than 565 (Ma).
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
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