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来自南极半岛西摩岛始新世早期至中期的新真鲨形目鲨鱼（软骨鱼纲，板鳃亚纲）

New Carcharhiniform Sharks (Chondrichthyes, Elasmobranchii) from the Early to Middle Eocene of Seymour Island, Antarctic Peninsula.

作者信息

Engelbrecht Andrea, Mörs Thomas, Reguero Marcelo A, Kriwet Jürgen

机构信息

Faculty of Earth Sciences, Geography and Astronomy, Department of Palaeontology, University of Vienna, Geozentrum, Althanstraße 14, 1090 Wien, Austria.

Department of Palaeobiology, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden.

出版信息

J Vertebr Paleontol. 2017;27(6):e1371724. doi: 10.1080/02724634.2017.1371724. Epub 2017 Nov 20.

DOI:10.1080/02724634.2017.1371724
PMID:29551850
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5856364/
Abstract

Seymour Island, Antarctic Peninsula, is known for its wealth of fossil remains. This island provides one of the richest fossiliferous Paleogene sequences in the world. Chondrichthyans seemingly dominate this Eocene marine fauna and offer a rare insight into high-latitude faunas during the Palaeogene. So far, only a few isolated teeth of carcharhinid sharks have been reported from Seymour Island. Bulk sampling in the well-exposed La Meseta and Submeseta formations yielded new and abundant chondrichthyan material, including numerous teeth of carcharhinid and triakid sharks. Here, we present a reevaluation of the previously described carcharhinid remains and a description of new taxa: , gen. et sp. nov., , gen. et sp. nov., , sp. nov., and , sp. nov. The carcharhiniforms sp. and sp. are reported based on rare material, whereas teeth previously assigned to represent a nomen dubium.

摘要

南极半岛的西摩岛以其丰富的化石遗迹而闻名。该岛拥有世界上最丰富的古近纪含化石层序之一。软骨鱼类似乎在这个始新世海洋动物群中占主导地位，并为古近纪高纬度动物群提供了难得的见解。到目前为止，西摩岛仅报道了少数孤立的真鲨科鲨鱼牙齿。在暴露良好的拉梅塞塔组和亚梅塞塔组进行的大量采样产生了新的、丰富的软骨鱼类材料，包括许多真鲨科和皱唇鲨科鲨鱼的牙齿。在此，我们对先前描述的真鲨科遗迹进行重新评估，并描述新的分类单元： ，新属新种， ，新属新种， ，新种，以及 ，新种。基于稀少的材料报道了真鲨形目 种和 种，而先前归入 的牙齿代表一个疑名。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2aa33cc6ba40/emss-75832-f015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/dcb122696a48/emss-75832-f001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2c20d2e08d0a/emss-75832-f004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/21f43d6096a6/emss-75832-f005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/5158e2e1eb6c/emss-75832-f006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/825fe6aada8b/emss-75832-f007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/3a3e1a0c939e/emss-75832-f008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/f1600eb266ab/emss-75832-f009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/b48cbf914cf0/emss-75832-f010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/ad759438c1c2/emss-75832-f011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/a6d5c1a0af6b/emss-75832-f012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/7202076d2d1b/emss-75832-f013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/0afa3705989d/emss-75832-f014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2aa33cc6ba40/emss-75832-f015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/dcb122696a48/emss-75832-f001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/746322001a6a/emss-75832-f002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2b31b230524a/emss-75832-f003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2c20d2e08d0a/emss-75832-f004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/21f43d6096a6/emss-75832-f005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/5158e2e1eb6c/emss-75832-f006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/825fe6aada8b/emss-75832-f007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/3a3e1a0c939e/emss-75832-f008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/f1600eb266ab/emss-75832-f009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/b48cbf914cf0/emss-75832-f010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/ad759438c1c2/emss-75832-f011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/a6d5c1a0af6b/emss-75832-f012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/7202076d2d1b/emss-75832-f013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/0afa3705989d/emss-75832-f014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f2cc/5856364/2aa33cc6ba40/emss-75832-f015.jpg

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