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原文連結
論文資訊
- 類型：已發表論文
- 日期：1999
摘要
The dynamics of origination in the fossil record of three 海洋 groups (molluscs, echinoderms and fishes) and three terrestrial groups (mammals, insects and plants) is analyzed in this paper. Four hypotheses are tested: (1) secular decline in lineage origination; (2) secular decline in 演化ary innovation; (3) 多樣性 dependence of lineage origination; (4) self-organized 臨界性 of lineage origination. A decline in lineage origination and in the production of major innovations is present in all groups, suggesting controls that transcend the land-sea distinction. The relationship between 多樣性 and origination appears to be strong in the sea and weak on land, a difference that might imply environment-specific controls. Mixed support for a logistic dynamics of origination is found. Finally, no general suppor
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