从摩洛哥东南部的提托尼安-白垩纪间隙看侏罗纪-白垩纪过渡的新冈瓦纳视角

IF 1.9 3区 地球科学 Q1 GEOLOGY
Hassan Aouraghe , Rachid Chennouf , Hamid Haddoumi , Maxime Lasseron , Hicham Mhamdi , Emmanuel Gheerbrant , Jeremy E. Martin
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引用次数: 0

摘要

对冈瓦纳,特别是非洲侏罗纪-白垩纪过渡时期的大陆动物和植物的了解十分有限。在这里,我们报告了在摩洛哥东南部阿努阿勒向斜的提托尼-白垩纪间发现的罕见植物和水生爬行动物群。通过初步的野外调查,我们发现了一具鳄科动物的骨架、一块龟板碎片和丰富的植物遗骸,这为进一步开发化石层提供了条件。这组化石表明了一个淡水栖息地,周围是茂密潮湿的针叶林。它的分类组成与已知的同时代劳拉西亚化石群非常相似,并强调了同时期贡瓦纳化石群的稀缺性。我们的发现凸显了近特提斯大陆集合体可能具有共同的类群,并提出了侏罗纪-白垩纪过渡时期的劳拉斯类群和贡兹瓦纳类群在白垩纪后期分化之前是否具有世界性的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new Gondwanan perspective on the Jurassic-Cretaceous transition from the Tithonian-Berriasian interval of southeastern Morocco

Knowledge of continental faunas and floras from the Jurassic–Cretaceous transition in Gondwana, and especially in Africa, is limited. Here, we report the discovery of a rare assemblage of plants and aquatic reptiles from the Tithonian–Berriasian interval of the Anoual syncline in southeastern Morocco. Our preliminary field investigations led to the discovery of a disarticulated skeleton of a goniopholidid crocodylomorph, of a single fragment of a turtle plate, and of abundant plant remains, inviting further exploitation of the fossiliferous horizon. This assemblage indicates a freshwater habitat bordered by a lush moist conifer forest. Its taxonomic composition shows a strong similarity with better known contemporaneous Laurasian assemblages and stresses the paucity of coeval Gondwanan assemblages. Our discovery highlights that peri-Tethys continental assemblages may have shared common taxa and raises the question whether Laurasian and Gondwanan taxa from the Jurassic-Cretaceous transition were cosmopolitan, before they diverged later during the Cretaceous.

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来源期刊
Cretaceous Research
Cretaceous Research 地学-地质学
CiteScore
4.10
自引率
19.00%
发文量
235
审稿时长
12 weeks
期刊介绍: Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.
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