副贝:克罗地亚西北部samobor和Žumberak mts .的中三叠世菊石的重新鉴定及其系统学和生物地层学意义

IF 1.6 3区 地球科学 Q2 GEOLOGY
Fran Vidaković, Robert Šamarija, J. Sremac, Dražen Japundžić
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引用次数: 0

摘要

萨莫博尔和茹姆巴拉克山脉(克罗地亚西北部)的中三叠纪盆地序列在历史上产生了菊石化石。然而,这些发现在后来的文献中基本上被忽视了。本文描述并重新描述了大量菊石,其中大部分是20世纪以前的研究人员收集的。除了详细的分类学描述和修订外,还确定了这些地区以前未知的几个分类群。在其正模被指定在GregrućBreg地区的物种中,有些物种被发现是可疑的,其他物种的有效性仍然没有定论,只有一个分类单元,即Eopractuchyceras dorae comb。11月,被视为有效。某些中三叠纪菊石属也可能需要未来的全面修订。为了包含文献中的大部分数据,提出了一个初步的、修改过的德提斯省拉迪尼亚菊石地带/亚地带方案。人们认识到需要改进这一阶段的细分。根据菊石,GregurićBreg地区(Samobor Mts)的浓缩红色结节状石灰岩很可能横跨Avisianum亚带(上伊利里亚阶)-Longobardicum亚带(“中”Longobardian阶),这表明沉降始于伊利里亚阶的早期。在森伯拉克山,少量的菊石遗迹表明,该序列的上部富含石灰石的部分至少横跨Avisianum亚带(上伊利里亚阶)-Longobardicum亚带(“中”Longobardian阶),但需要更多的数据才能得出更有力的结论。总的来说,GregurićBreg和zhumbeak地区(下伊利里亚阶-上朗戈第阶)之间的盆地沉积时间有很好的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SIDELINED SEASHELLS: REAPPRAISAL OF THE MIDDLE TRIASSIC AMMONOIDS OF SAMOBOR AND ŽUMBERAK MTS. (NORTH-WESTERN CROATIA) AND THEIR SYSTEMATICS AND BIOSTRATIGRAPHIC IMPLICATIONS
Basinal Middle Triassic successions of the Samobor and Žumberak Mts. (north-western Croatia) have historically produced fossils of ammonoids. These finds have, however, largely been neglected in the later literature. This paper describes and redescribes a large collection of ammonoids, most of which were collected by previous researchers throughout the 20th century. Aside from the detailed taxonomic descriptions and revisions, several taxa previously unknown from these localities were identified. Of the species whose holotypes were designated at the Gregruć Breg locality, some are found to be dubious, with validity of other remaining inconclusive and a single taxon, Eoprotrachyceras dorae comb. nov., being treated as valid. Certain Middle Triassic ammonoid genera may also require future comprehensive revisions. A preliminary, modified ammonoid zonal/sub-zonal scheme for the Ladinian of the Tethyan province is proposed, to be inclusive of most of the data from the literature. The need for improvement of the subdivision of this stage is recognized. Based on ammonoids, condensed red nodular limestones of the Gregurić Breg locality (Samobor Mts.) most likely span the Avisianum subzone (upper Illyrian) – Longobardicum subzone (“middle” Longobardian), indicating that subsidence began in the earlier part of the Illyrian. At Mt. Žumberak, scant ammonoid remains indicate that the upper, limestone-rich portion of this succession spans at least the Avisianum subzone (upper Illyrian) – Longobardicum subzone (“middle” Longobardian), but additional data is needed for drawing more robust conclusions. Overall, the timing of basinal deposition is well correlated between Gregurić Breg and Žumberak localities (lower Illyrian – upper Longobardian). 
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来源期刊
CiteScore
3.60
自引率
4.30%
发文量
28
审稿时长
>12 weeks
期刊介绍: The Rivista Italiana di Paleontologia e Stratigrafia was founded in 1895. It publishes original papers dealing with all fields of paleontology and of stratigraphy, from Italy and the Mediterranean to the Tethys, as well across the globe from China to North America.
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