Middle and Late Upper Jurassic ammonites from the Dalichai Formation west of Shahrud (East Alborz, North Iran)

作者:Seyed Emami Kazem*; Schairer Gerhard; Raoufian Ahmad; Shafeizad Maryam
来源:Neues Jahrbuch fur Geologie und Palaontologie-Abhandlungen, 2013, 267(1): 43-66.
DOI:10.1127/0077-7749/2012/0296

摘要

The following ammonite families are reported from the Dalichai Formation west of Shahrud (eastern Alborz, North Iran): Phylloceratidae, Haploceratidae, Oppeliidae, Sphaeroceratidae, Stephanoceratidae, Otoitidae, Tulitidae, Macrocephlitidae, Perisphinctidae, Ataxioceratidae, Aspidoceratidae and Reineckeiidae, the latter with the newly introduced taxon Alborzites binaludensis SEYED-EMAMI nov. sp. The fauna comprises 23 species, most of them recorded from Iran for the first time. The described ammonites range from early Late Bajocian (late Early Bajocian?) to Middle Oxfordian. The ammonites are commonly concentrated in red, nodular limestones ("Ammonitico Rosso" facies). Palaeobiogeographically the ammonite fauna is closely related to those from the Submediterranean Province of the northwestern Tethys.

  • 出版日期2013-1

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