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一种来自新西兰渐新世的新扁吻海豚，具有独特的进食方式。

a new platanistoid dolphin from the Oligocene of New Zealand with a unique feeding method.

作者信息

Meekin Shane, Fordyce R Ewan, Coste Amber

机构信息

Geology Department, University of Otago, Dunedin, New Zealand.

Department of Animal Welfare and Management, Moulton College, Northampton, UK.

出版信息

J R Soc N Z. 2024 Feb 21;54(5):758-777. doi: 10.1080/03036758.2024.2314505. eCollection 2024.

DOI:10.1080/03036758.2024.2314505
PMID:39440282
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11459759/
Abstract

Pre-Miocene, stem odontocetes are known for their procumbent incisors and their function has been the subject of much speculation. Notable among these were and several related taxa from New Zealand. Though some studies hypothesise the function of these teeth was for thrusting, the here described has unique teeth which might have formed a cage around small fish. These teeth, along with a weak vertex, flexible neck, and the smallest size among its relatives would make it a capable hunter in shallow waters. The addition of along with other taxa to phylogenetic analyses show three broad groups within taxa related to and based on the divergence of the function of their teeth and the possible feeding strategies employed to catch prey.

摘要

中新世之前，早期齿鲸类以其前倾的门齿而闻名，其功能一直是诸多猜测的主题。其中值得注意的是来自新西兰的 以及几个相关分类群。尽管一些研究推测这些牙齿的功能是用于刺戳，但这里描述的 具有独特的牙齿，可能会围绕小鱼形成一个笼子。这些牙齿，连同较弱的头顶、灵活的颈部以及在其亲属中最小的体型，将使其成为浅水区能干的猎手。将 以及其他分类群添加到系统发育分析中表明，基于牙齿功能的差异以及用于捕食的可能捕食策略，在与 和 相关的分类群中有三大类。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/bbbd468d95da/TNZR_A_2314505_F0004_OB.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/dcc3aea2b403/TNZR_A_2314505_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/1583d5d8034f/TNZR_A_2314505_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/4c1fb823d6db/TNZR_A_2314505_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/bbbd468d95da/TNZR_A_2314505_F0004_OB.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/dcc3aea2b403/TNZR_A_2314505_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/1583d5d8034f/TNZR_A_2314505_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/4c1fb823d6db/TNZR_A_2314505_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8712/11459759/bbbd468d95da/TNZR_A_2314505_F0004_OB.jpg

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Cladistics. 2016 Jun;32(3):221-238. doi: 10.1111/cla.12160. Epub 2016 Apr 25.
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The so-called foramen singulare in cetacean periotics is actually the superior vestibular area.
所谓的鲸类耳骨中的单孔，实际上是上前庭区。
Anat Rec (Hoboken). 2021 Aug;304(8):1792-1799. doi: 10.1002/ar.24585. Epub 2021 Jan 17.
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Convergent Evolution of Swimming Adaptations in Modern Whales Revealed by a Large Macrophagous Dolphin from the Oligocene of South Carolina.现代鲸鱼游泳适应性的趋同进化：来自南卡罗来纳州渐新世的大型食鱼海豚提供的证据。
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