期刊
COMPTES RENDUS PALEVOL
卷 13, 期 5, 页码 369-381出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crpv.2014.03.001
关键词
La Voulte; Lagerstatte; Callovian; Middle Jurassic; Palaeoenvironment; Palaeobiodiversity; Bathyal
类别
The La Voulte Lagerstatte (Jurassic, France) is characterized by a diverse and exceptionally well-preserved fauna. It was located along the western Tethyan margin where the submarine relief was steep. The sedimentation was dominated by marls suggesting a low energy and deep-water depositional environment. The La Voulte biota is remarkable for its biodiversity with about 60 different species. The major components are the arthropods (50% of the species), the cephalopods (10%) and the echinoderms (10%). Among the arthropods, the composition and some anatomical features suggest a relatively deep-water environment characterized by dim-light conditions. The cephalopods and other organisms (pycnogonids, asterids), have extant analogues that all live in deep-water niches always exceeding 200 m. The fauna as a whole bears the characteristic features of the present-day bathyal fauna. The La Voulte Lagerstatte may be one of the rare Jurassic Lagerstatten, if not the unique, to have fossilized a deep marine fauna. (C) 2014 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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