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原文連結
論文資訊
- 類型：已發表論文
- 日期：2011
摘要
Diverse bilaterian clades emerged apparently within a few million years during the early Cambrian, and various environmental, developmental, and ecological causes have been proposed to explain this abrupt appearance. A compilation of the patterns of fossil and molecula diversification, comparative developmental data, and 資訊 on ecological feeding strategies indicate that the major animal clades diverged many tens of millions of years before their first appearance in the fossil record, demonstrating a macro演化ary lag between the establishment of their developmental toolkits during the Cryogenian [(850 to 635 million years ago Ma)] and the later ecological success of metazoans during the Ediacaran (635 to 541 Ma) and Cambrian (541 to 488 Ma) periods. We argue that this diversification involved
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