晨间信号Morning Signal
《科学》 第392卷 第6805期 · 2026年6月25日 · 中文解读

被子植物繁殖策略的多样化早于白垩纪末灭绝事件

Diversification of angiosperm reproductive strategies predated the end-Cretaceous extinction · J. Lee et al.
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本文报道了来自新墨西哥州晚坎帕期热带森林的原位大型繁殖体,表明被子植物在繁殖投资和特化方面的显著增加早于白垩纪末灭绝事件。
原文开头
Jaemin Lee1,2*, Dori L. Contreras3, James G. Saulsbury4, Garland R. Upchurch5, Cindy V. Looy1,2,6 Angiosperm reproductive evolution is traditionally linked to the end-Cretaceous biotic crisis and subsequent ecological restructuring. Here, we report diverse and unexpectedly large diaspores (dispersal units) from an in situ late Campanian (74.6 million years ago) tropical forest from the Jose Creek Formation in New Mexico. Nearly 80 distinct diaspore morphotypes demonstrate that the flora had increased morphological specialization and an exceptionally large average and range of diaspore volume comparable to the Cenozoic records. These findings suggest that substantial increases in reproductive investment and specialization preceded the end-Cretaceous extinction. …
摘自《科学》(Science)第392卷 第6805期 · 2026年6月25日,J. Lee et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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