Abstract

An analysis of the Eurasian Cenozoic (late Eocene-Neogene) fossil record of anatids (Anatidae s. l.; including Romainvilliinae and Dendrocygninae) is presented. The evolutionary origin of Anatidae s. l. may be associated with the appearance of large shallow waterbodies in Asia during the Late Eocene as a result of the fall in the global sea level and the resulting retreat of the epicontinental seas. Four major temporal stages can be recognized in the evolution of the Cenozoic Eurasian anatids communities, without any traceable continuity between particular stages (at the current stage of knowledge). Some recent anatid genera (e.g., Tadorna) first appear in the paleontological record at the level of the early and middle Miocene (17–15 Ma), but temperate faunas of essentially modern ecological composition became widespread only in the late Miocene (9–6 Ma). The details of transitions between various faunistic stages, as well as the origin of modern communities, remain largely unstudied.

中文翻译：

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欧亚花样动物的新生代演化

摘要

提出了对欧亚新生代（晚始新世-新近纪）化石记录的分析（Anatidae sl；包括Romainvilliinae和Dendrocygninae）。由于全球海平面的下降和上陆大陆海的退缩，新世晚期亚洲蛙科sl的进化起源可能与亚洲大型浅水体的出现有关。新生代欧亚象足群落的演化可以识别四个主要的时间阶段，而在特定阶段之间（在当前的知识阶段）没有任何可追溯的连续性。一些最近的A​​nadiad属（例如，Tadorna）首次出现在中新世早期和中期（17-15 Ma）的古生物学记录中，但实质上具有现代生态组成的温带动物群仅在中新世晚期（9-6 Ma）才开始传播。在各种货币主义阶段之间过渡的细节，以及现代社区的起源，很大程度上仍未得到研究。