Darriwilian (Middle Ordovician) conodont biofacies from the Central Precordillera of Argentina

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• 作者：Fernanda Serra^a ; ^c ; ^{fserra@unc.edu.ar} ; Nicolá ; s A. Feltes^a ; ^c ; Miles A. Henderson^b ; Guillermo L. Albanesi^a ; ^c
• 关键词：Conodont paleoecology ; Middle Ordovician ; Precordillera ; Argentina
• 刊名：Marine Micropaleontology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：130
• 期：Complete
• 页码：15-28
• 全文大小：3079 K
• 卷排序：130

文摘

The Periodon-Paroistodus biofacies is recognized spanning the Yangtzeplacognathus crassus–Eoplacognathus pseudoplanus zones in the Central Precordillera. Modifications in the biofacies structure accompany changes in the lithofacies and depositional environments. Fluctuations in sea level to shallower water settings lead to higher species richness, diversity, and evenness of conodonts. Darriwilian conodont faunas were compared among diverse localities at a global scale. A new conodont species Fahraeusodus jachalensis n. sp. Feltes and Albanesi, is defined and described.