...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Paleontology >Kooiichthys jono n. gen. n. sp., a primitive catfish (Teleostei, Siluriformes) from the marine Miocene of southern South America
【24h】

Kooiichthys jono n. gen. n. sp., a primitive catfish (Teleostei, Siluriformes) from the marine Miocene of southern South America

机译：Kooiichthys jono n。 gen。 。 sp。，来自南美南部海洋中新世的原始cat鱼（Teleostei，Siluriformes）

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 specimen of a remarkable new catfish genus and species was collected in middle/late Miocene marine beds of the Puerto Madryn Formation at the base of the marine cliff of the sea lion colony area near Puerto Piramide, southern coast of Peninsula Valdes, northeastern Patagonia, Argentina. Siluriforms (catfishes) constitute a most important monophyletic ostariophysan group of mainly freshwater fishes that occurs in almost all continents but it is especially diverse in South America. Catfishes are presently distributed in tropical to temperate areas and a small number of species are marine or amphibiotic. The new catfish shows many primitive features for catfishes in the maxilla, autopalatine, hyal elements, and Weberian apparatus. The genus is clearly distinguished by four autapomorphies: sand clock-shaped autopalatine, posterior limb of autopalatine widening strongly, post-articular arm of autopalatine longer, and a metapterygoid longer than broad. One tree was obtained both under equal and implied weighting with the following topology: a basal polytomy in the Siluriformes formed by Diplomystidae, Bachmanniidae, Kooiichthys and the Siluroidei. The new species appears to have been a marine or amphibiotic taxon: it was collected in beds considered to represent the Maximum Flooding Horizon of the transgression that deposited the Puerto Madryn Formation. The coast at this moment was at approximately 90 km to the west. According to faunistic evidence, the sea was warm temperate.
机译：在巴拉丁半岛南部海岸，波多黎各皮拉米德附近，海狮殖民地地区海崖底部的马德林港中/晚中新世海床中，收集到了一个非凡的new鱼新属和新物种标本。阿根廷。 uri形目（cat鱼）是主要的淡水鱼类最重要的单系ostariophysan组，几乎遍布所有大洲，但在南美尤为多样化。 fish鱼目前分布在热带到温带地区，少数种类是海洋或两栖类。新型cat鱼在上颌骨，自体hy骨，透明骨和韦伯氏器具中显示出许多many鱼的原始特征。该属明显地具有四个自交形：沙钟形的autopalatine，autopalatine的后肢强烈展宽，autopalatine的关节后臂更长，以及比宽翼突长。在以下条件下，在相等和隐含的权重下获得一棵树：由双龙科，Bachmanniidae，Kooiichthys和Siluroidei组成的Siluriformes的基部切开术。新物种似乎是海洋或两栖类群：它收集在被认为代表沉积马德林港海侵的最大洪水视界的河床中。此时的海岸距离西部约90公里。根据有趣的证据，大海温暖。

著录项

相似文献

  • 外文文献
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