https://scholars.lib.ntu.edu.tw/handle/123456789/635396
標題: | In search of the origin of crown Mysticeti | 作者: | CHENG-HSIU TSAI | 關鍵字: | Baleen whale | New Zealand | Oligocene | Phylogeny | Toothed mysticete | 公開日期: | 23-八月-2023 | 出版社: | Taylor and Francis Asia Pacific | 期: | Special issue: Fossil vertebrates from southern Zealandia | 來源出版物: | Journal of the Royal Society of New Zealand | 摘要: | Recent research on mysticete fossils from the Late Eocene and Oligocene has revolutionised our understanding of the diversity and evolutionary scenarios for early baleen whales. For example, aetiocetids are a possible, though controversial, lineage that bridges the gap between the toothed and baleen-bearing mysticetes, and eomysticetids show a further transitional step towards the baleen-bearing status, with the presence of non-functional dentition in adults. However, information about the origin of crown mysticetes, including the most recent common ancestor of all extant lineages and its descendants, is critical to further understanding the evolution of baleen whales. The phylogenetic positions of the Oligocene Toipahautea, Whakakai, Horopeta, and Mauicetus from New Zealand remain unresolved and problematic, but all four genera show a close relationship with crown mysticetes. The original and subsequent cladistic analyses have consistently revealed a sister relationship between the Toipahautea-to-Mauicetus grade and crown mysticetes, and Horopeta has been placed close to the cetotheriids within the crown group. This review aims to stimulate more research on this topic by elucidating the origin of crown mysticetes, which likely experienced a poorly known radiation event during the Oligocene that established the modern lineages. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/635396 | ISSN: | 03036758 | DOI: | 10.1080/03036758.2023.2249410 |
顯示於: | 生命科學系 |
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