...
  • 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 >The perisphinctid genus Prososphinctes SCHINDEWOLF (Ammonoidea, subfamily Prososphinctinae nov.): an indicator of palaeoecological changes in the Early Oxfordian Submediterranean sea of southern Poland
【24h】

The perisphinctid genus Prososphinctes SCHINDEWOLF (Ammonoidea, subfamily Prososphinctinae nov.): an indicator of palaeoecological changes in the Early Oxfordian Submediterranean sea of southern Poland

机译：鞘翅类近亲鱼类SCHINDEWOLF（Ammonoidea，Prososphinctinae nov亚科）：波兰南部牛津早期地中海近海古生态变化的指标

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The perisphinctid genus Prososphinctes SCHINDEWOLF is monographed with regard to its palaeoecological and biostratigraphic value, palaeobiogeographic dispersion, phylogeny and sys-tematics. The conclusions are based on new ammonite collections from the Lower Oxfordian Jasna Gora beds, Submediterranean neritic sea, southern Poland. BUKOWSKI'S (1887) species (consociatus, claromontanus) are re-evaluated using topotypes from the Czestochowa region and their types – first illustrated here – kept in Vienna (Austria). BROCHWICZ-LEWINSKI'S (1981) species are re-interpreted and re-illustrated. New species is erected (polelum). The genus ranges in Poland from the Mariae up to the middle Cordatum Zone (Costicardia Subzone), with sporadic occurrences higher up. The new subfamily Prososphinctinae is erected. Besides incorporating Prososphinctes, it groups succes-sive Oxfordian genera (Liosphinctes, Platysphinctes, Larcheria, and allies), which are considered to form a lineage. This study supports the Cuban perisphinctid subfamily Vinalesphinctinae as being an offshoot of the Prososphinctinae lineage. The bed-by-bed analysis of Prososphinctes-bearing am-monite assemblages using quantitative methods is designed to identify and time-correlate percentage changes in indigenous Perisphinctidae and adventive (Boreal or Mediterranean) ammonite families. The paper links these changes with the establishment of new open marine sea-ways (determined by tectono-eustatic factors), and their postulated impact on the Submediterranean ammonite habitat. Prososphinctes is regarded as a precise indicator of these changes due to its pronounced fluctuations in abundance from the bottom to the top of the sections. The present study demonstrates that the early stages of dispersion and diversification of the perisphinctid stock in the Early-Middle Oxfordian were closely related to habitat fluctuations and determined by biological mechanisms (opportunistic in Prososphinctes versus equilibrial in Perisphinctes) and interactions (competition).
机译：鞘翅类近新藻类SCHINDEWOLF的专论涉及其古生态学和生物地层学价值，古生物地理分布，系统发育和系统学。这些结论是基于波兰南部地中海下缘浅海的牛津下Jasna Gora河床的新铵盐收集物得出的。 BUKOWSKI（1887）的物种（conociatus，claromontanus）使用Czestochowa地区的拓扑表型进行了重新评估，其类型（此处首次说明）保存在维也纳（奥地利）。对BROCHWICZ-LEWINSKI（1981）的物种进行了重新解释和说明。竖立了新物种（极柱）。波兰的属范围从玛丽亚（Mariae）到中部Cordatum区（Costicardia Subzone）中部，零星的发生率更高。建立了新的亚纲Prososphinctinae。除了合并前括约肌外，它还将成功的牛津属（Liosphinctes，Platetyphinctes，Larcheria和盟友）归为一类。这项研究支持古巴鼻鞘近端亚科Vinalesphinctinae作为Prososphinctinae血统的分支。使用定量方法逐项分析含Prososphinctes的亚-族组合的目的是鉴定并实时关联土著Perisphinctidae和外来（北方或地中海）am石族的百分比变化。该论文将这些变化与建立新的开放海洋海道（由构造-地心急转弯因素确定）联系起来，并假定它们对地中海南部的亚mon族栖息地产生了影响。由于前突部分从底部到顶部的丰度明显波动，因此被认为是这些变化的精确指示。本研究表明，牛津中早期的近孢子鞘类种群的分散和多样化的早期阶段与栖息地的波动密切相关，并由生物学机制（前括约肌的机会主义相对于Perisphinctes的均衡）和相互作用（竞争）决定。

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