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对“胎盘哺乳动物祖先与 K-Pg 后胎盘哺乳动物辐射”的评论的回应。

Response to comment on "The placental mammal ancestor and the post-K-Pg radiation of placentals".

机构信息

Department of Anatomical Sciences, HSC T-8 (040), Stony Brook University, Stony Brook, NY 11794-8081, USA.

出版信息

Science. 2013 Aug 9;341(6146):613. doi: 10.1126/science.1238162.

DOI:10.1126/science.1238162
PMID:23929968
Abstract

Tree-building with diverse data maximizes explanatory power. Application of molecular clock models to ancient speciation events risks a bias against detection of fast radiations subsequent to the Cretaceous-Paleogene (K-Pg) event. Contrary to Springer et al., post-K-Pg placental diversification does not require "virus-like" substitution rates. Even constraining clade ages to their model, the explosive model best explains placental evolution.

摘要

使用多样化的数据进行建树可以最大限度地提高解释能力。将分子钟模型应用于古生物种形成事件存在检测白垩纪-古近纪（K-Pg）事件后快速辐射的风险。与 Springer 等人的观点相反，K-Pg 之后胎盘类动物的多样化并不需要“类似病毒”的替代率。即使将进化枝年龄限制在其模型范围内，爆炸模型也能最好地解释胎盘类动物的进化。

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