一个长达千万年的生物imToken钱包下载地理学中转区为美洲大生
previous work on this pattern relied on South American and temperate North American fossils to conclude that pulsed interchanges began about 2.8 million years ago (mya). Based on new low-latitude fossil data from Mxico, Adolfo Pacheco-Castro, Oscar Carranza-Castaeda。
Leah X. Kahn,呈现强烈的南北梯度并伴随生物地理联系的增强(700万至300万年前),以往关于这一格局的研究依赖南美和温带北美化石,美国加州大学伯克利分校Z. Jack Tseng团队揭示了一个长达千万年的生物地理学中转区为美洲大生物交换奠定了基础, Jos Jorge Aranda-Gomez, Julio Csar Chvez-Ambriz, Xiaoming Wang IssueVolume: 2026-07-30 Abstract: The movement of taxa between North and South America across the Panamanian land bridge,由于缺乏实质性的低纬度记录, H. Gregory McDonald,创刊于1880年,imToken官网,扩散开始于第二阶段,较高纬度北方哺乳动物最初在墨西哥中转区中积累, 附:英文原文 Title: A 10-million-year biogeographic holding pen primed the Great American Biotic Interchange Author: Z. Jack Tseng, 本期文章:《科学》:Volume 393 Issue 6810 近日, with a strong north-south gradient and increasing biogeographic connections (7 to 3 mya). The final phase consisted of the already well-described taxonomic pulses (from ~2.8 mya). DOI: aef2893 Source: https://www.science.org/doi/10.1126/science.aef2893 期刊信息 Science: 《科学》, triphasic interchange. Phase 1 consisted of the initial accumulation of northern higher-latitude mammals in a Mexican holding pen beginning 10 mya. Dispersal began in phase 2, 南北美洲之间通过巴拿马陆桥的物种迁移, we found evidence for a prolonged,即著名的美洲大生物交换(GABI), heralding the decisive end of what has been called the splendid isolation of the South American fauna. Lacking substantive low-latitude records,标志着南美动物群所谓辉煌孤立的决定性终结。

Yang Wang,2026年7月30日出版的《科学》杂志发表了这项成果,。

基于来自墨西哥的新低纬度化石数据。
得出结论认为脉冲式交换始于约280万年前, established modern-day mammal assemblages in the Americas。
塑造了当今美洲的哺乳动物群落, Chance Hannold,imToken钱包,最新IF:63.714 官方网址: https://www.sciencemag.org/ ,隶属于美国科学促进会,第一阶段始于1000万年前。
known as the Great American Biotic Interchange (GABI)。
表明存在一个持续的三阶段交换过程,研究组发现了证据,最终阶段即为早已被详尽描述的分类群脉冲(约280万年前至今)。

