...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >Middle Miocene toothed whale with Platanista-like teeth from the Vienna Basin (Western Carpathians, Slovakia)
【24h】

Middle Miocene toothed whale with Platanista-like teeth from the Vienna Basin (Western Carpathians, Slovakia)

机译：中新世齿鲸，来自维也纳盆地（斯洛伐克喀尔巴阡山脉），有类似Platanista的牙齿

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A fragmentary odontocete (toothed whale) skull, found in the Late Badenian (Middle Miocene, Early Serravallian, 13-12.7 Ma) marine deposits of the locality Rohoznik-Konopiska, Slovakia, on the eastern margin of the Vienna Basin, north-western part of the Central Paratethys Sea, includes fragments of the rostrum and mandible with a series of 70 teeth. This specimen is referred here to the platanistid subfamily Pomatodelphininae, based on the long and narrow dorsoventrally flattened rostrum and mandible, the strong curvature, the ornament, and the size range of the teeth. Tooth sections show only one complete postnatal growth layer, indicating a very Young individual. This record extends the presence of pomatodelphinines in the Central Paratethys into the late Middle Miocene. The peculiar morphology of the feeding apparatus, namely the elongated jaws and the tong and interlocking anterior teeth, suggests that this taxon and related species were feeding in a way similar to the fish-eating relict Recent platanistid Platanista (Ganges and Indus River dolphins). The local geological and palaeogeographic contexts, especially the proximity of the palaeo-Danube delta, further support the frequent association of platanistids with deltaic to freshwater deposits. Nevertheless, the geographic distribution of fossil and Recent platanistids implies that at least some species were able to cross strictly marine regions.
机译：在斯洛伐克西北部维也纳盆地东部边缘的巴登尼晚期（中新世中期，塞拉瓦利安早期，13-12.7 Ma）海相沉积物中发现了碎片齿齿鲸头骨（齿鲸）帕拉提斯海中部，包括讲台和下颌骨的碎片，有70颗牙齿。该标本在此被称为platististid亚科Pomatodelphininae，其基于长而狭窄的背腹扁平的讲台和下颌骨，强烈的曲率，装饰和牙齿的大小范围。牙齿部分仅显示一个完整的产后生长层，表明一个非常年轻的个体。这项记录将中南部的Paratethys中的番茄红素的存在扩展到了中新世中期。饲喂设备的特殊形态，即长颚，钳子和前牙互锁，表明该类群和相关物种的饲喂方式类似于食鱼的最近的platanistid Platanista（恒河和印度河海豚）。当地的地质和古地理环境，尤其是古-多瑙河三角洲的邻近地区，进一步支持了泛太平洋与三角洲到淡水沉积物的频繁联系。然而，化石和近柏的地理分布意味着至少某些物种能够严格穿越海洋区域。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号