Angiosperm pollen grains of San Just site (Escucha Formation) from the Albian of the Iberian Range (north-eastern Spain)

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• 作者：Uxue Villanueva-Amadoz ; Denise Pons ; José ; B. Diez ; Javier Ferrer ; Luis M. Sender
• 关键词：Palynology ; Angiosperms ; Pennipollis escuchensis nov. sp. ; Albian ; Escucha Formation ; Iberian Range (Spain)
• 刊名：Review of Palaeobotany and Palynology
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：162
• 期：3
• 页码：362-381
• 全文大小：1699 K

文摘

The most complete angiospermous palynological assemblage for the middle–earliest late Albian of north-eastern Spain is reported from the Middle Member of the Escucha Formation at the San Just site. Nine palynological samples yielded mainly monosulcates (Clavatipollenites, Dichastopollenites, Hammenia, Jusinghipollis, Liliacidites, Pennipollis including proposed new species P. escuchensis, Retimonocolpites, and Transitoripollis) and a few tricolpates (Phimopollenites, Rousea, Striatopollis, and Tricolpites). These assemblages, mainly composed of angiosperm pollen grains, suggest that significantly diversified flowering plants flourished both in brackish and freshwater swamp plain environments represented by the Escucha Formation in Albian times, although they were less diverse than angiosperms in the Late Cretaceous. The palynological assemblages share greatest similarities with those of other southern Laurasian localities, although there are some taxa more typical of palynofloras of northern Gondwana.