The palynology of the lower and middle Toarcian (Lower Jurassic) in the northern Lusitanian Basin, western Portugal

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• 作者：Vâ ; nia F. Correia^a ; ^b ; ^{vania.correia@lneg.pt} ; James B. Riding^c ; Paulo Fernandes^a ; Luí ; s V. Duarte^d ; Zé ; lia Pereira^b
• 关键词：Biostratigraphy ; Early Jurassic (Toarcian) ; Lusitanian Basin ; Palaeobiology ; Portugal ; Toarcian Oceanic Anoxic Event
• 刊名：Review of Palaeobotany and Palynology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：237
• 期：Complete
• 页码：75-95
• 全文大小：3824 K
• 卷排序：237

文摘

The samples produced low diversity dinoflagellate cyst with eight species recorded. The most abundant species is Luehndea spinosa. Dinoflagellate cysts dominate the Dactylioceras polymorphum ammonite biozone. They decreased in the Hildaites levisoni and Hildoceras bifrons ammonite biozones. The T-OAE is characterised by a decline in palynomorph abundance and diversity.