Small shelly fossils from the Lower Cambrian Lastours Formation, southern Montagne Noire, France

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• 作者：Javier Á ; lvaro ; J. ; Elicki ; Olaf ; Debrenne ; Franç ; oise ; Vizca&iuml ; no ; Daniel
• 关键词：Small shelly fossils ; Archaeocyaths ; Carbonates ; Lower Cambrian ; Montagne Noire ; France ; Microfossiles ; Arché ; ocyathes ; Carbonates ; Cambrien infé ; rieur ; Montagne Noire ; France
• 刊名：Geobios
• 出版年：2002
• 出版时间：July - August, 2002
• 年：2002
• 卷：35
• 期：4
• 页码：397-409
• 全文大小：1.17 M

文摘

The paper presents the first description and illustration of archaeocyaths and small shelly fossils from the lower member of the Lower Cambrian Lastours Formation (southern Montagne Noire). The outcrops of the Caunes–Minervois sheet thrust (Pardailhan nappe) represent alternation of relatively low-energy, shallow subtidal substrates (highly bioturbated mottled limestones), and reef flanks or inter-reef settings surrounded by winnowed archaeocyath-spiculate shelly pavements. The archaeocyathan assemblage (Botoman in age) is dominated by the genera Anthomorpha and Inessocyathus, from which the species Inessocyathus levis is reported for the first time in the southern Montagne Noire. Phosphate-shell microfossils comprise hyolithelminths (Hyolithellus and Torellella) and conodont-related sclerites (Yunnanodus), the latter having previously only been reported from the Meishucunian of south China.