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Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran

Ebrahim Ghasemi-Nejad, Martin J. Head and Maryam Zamani
Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran
Journal of Micropalaeontology (November 2008) 27, Part 2: 125-134


Upper Triassic (Norian) strata of the Miankuhi Formation in northeastern Iran have been studied palynologically, revealing a diverse but poorly preserved association of dinoflagellate cysts. Based on representatives of the genera Hebecysta, Heibergella, Rhaetogonyaulax and Sverdrupiella, the strata are assigned to the middle of the Hebecysta balmei Zone with an inferred age of early Late Norian. The association shows similarities with assemblages from Australia, New Zealand, Indonesia, Northwest Europe, arctic Canada and Alaska, indicating an interconnection of warm Tethyan waters during the Late Triassic. The occurrence of Sverdrupiella species in the clastic, near-shore marine deposits of Miankuhi, and their presence in similar sedimentary facies world-wide, indicate that this genus was well adapted to clastic shallow-marine environments. J. Micropalaeontol. 27(2): 125-134, November 2008.

ISSN: 0262-821X
EISSN: 2041-4978
Serial Title: Journal of Micropalaeontology
Serial Volume: 27, Part 2
Title: Dinoflagellate cysts from the Upper Triassic (Norian) of northeastern Iran
Affiliation: University of Tehran, Department of Geology, Tehran, Iran
Pages: 125-134
Published: 200811
Text Language: English
Publisher: British Micropalaeontological Society, London, United Kingdom
References: 46
Accession Number: 2009-059225
Categories: PaleobotanyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 1 plate, geol. sketch map
N36°15'00" - N36°15'00", E59°45'00" - E59°45'00"
Secondary Affiliation: Brock University, CAN, Canada
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200932
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