Dasycladales from the Permian Jamal Formation of Shotori Mountains, northeast Iran. Part I: Imperiella Elliott & Süssli, Nanjinoporlla Mu & Elliott, Tabasoporella nov. gen., and Pseudotabasoporella nov. gen.
Senowbari-Daryan B, Rashidi K (2010)
Publication Language: English
Publication Type: Journal article
Publication year: 2010
Journal
Book Volume: 56
Pages Range: 111-137
Journal Issue: 1
DOI: 10.1007/s10347-009-0195-3
Abstract
Calcareous algae of the Permian Jamal Formation were studied in three sections of the Shotori Mountains, located in northeastern Iran. In this paper, four genera including Imperiella Elliott and Süssli, Nanjinoporella Mu and Elliott, Tabasoporella nov. gen., and Pseudotabasoporellanov. gen. are described from the Howz-e Dorah locality, which is exposed about 2 km northeast of the type section of Jamal Formation in Mount Jamal. Tabasoporella nov. gen. is characterized by metaspondyl arrangement of phloiophore and wine-glass-shaped laterals with a stalk grouped to tufts. The individual tufts are separated by a ring-like cavity appearing as triangular, oval, or trapezoid in longitudinally dissected section. The arrangement and shape of the laterals in Pseudotabasoporella nov. gen. is similar to Tabasoporella nov. gen., but there are no cavities between the tufts. All four genera are highly developed and limited to the Permian period. They disappear at the end of Permian and are not found in the Triassic sediments. Until today, two species of Imperiella are found in Iran and Afghanistan. I. iranicaElliott and Süssli was described only from the Ruteh Formation of Alborz Mountains in north Iran and I. afghanica was described from the Permian of Afghanistan. The Jamal Formation of the Shotori Mountains is the second locality where both species are discovered. Moreover, species I. crassiparietalis and I. gracilis are the two new species described here. The genus Nanjinoporella—with type species N. pagoda Mu and Elliott—was known from the Permian (Artinskian) Chishia Formation of Nanjing, China. We describe the new species Nanjinoporellairanica from the Permian Jamal Formation of the Shotori Mountains, northeast Iran.
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Iran, Islamic Republic of (IR)How to cite
APA:
Senowbari-Daryan, B., & Rashidi, K. (2010). Dasycladales from the Permian Jamal Formation of Shotori Mountains, northeast Iran. Part I: Imperiella Elliott & Süssli, Nanjinoporlla Mu & Elliott, Tabasoporella nov. gen., and Pseudotabasoporella nov. gen. Facies, 56(1), 111-137. https://dx.doi.org/10.1007/s10347-009-0195-3
MLA:
Senowbari-Daryan, Baba, and Koorosh Rashidi. "Dasycladales from the Permian Jamal Formation of Shotori Mountains, northeast Iran. Part I: Imperiella Elliott & Süssli, Nanjinoporlla Mu & Elliott, Tabasoporella nov. gen., and Pseudotabasoporella nov. gen." Facies 56.1 (2010): 111-137.
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