Zittelina ? arumaensis (Okla 1995) nov. comb., and Suppiluliumaella tarburensis n. sp. (Dasycladales) from the upper Maa
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ORIGINAL PAPER
Zittelina? arumaensis (Okla 1995) nov. comb., and Suppiluliumaella tarburensis n. sp. (Dasycladales) from the upper Maastrichtian of Iran K. Rashidi 1 & F. Schlagintweit 2 Received: 21 February 2018 / Accepted: 16 August 2018 / Published online: 28 August 2018 # Saudi Society for Geosciences 2018
Abstract The species Salpingoporella arumaensis Okla, 1995 was so far only reported from its type-locality, the Campanian?Maastrichtian of Saudi Arabia. It is here reported for the first time from the upper Maastrichtian of the Tarbur Formation, Zagros Zone, SW Iran. It is taxonomically discussed and with some reservation newly combined as Zittelina? arumaensis (Okla). Suppiluliumaella tarburensis n. sp. is a small to medium-sized species of the genus characterized by a comparably small number of close-set laterals of two orders typical for the genus. It represents the youngest representative of the genus described so far. The new discoveries contribute to a better knowledge of the so far poorly known microflora of the Tarbur Formation of Iran. Z.? arumaensis might be an endemic taxon like Pseudocymopolia anadyomenea (Elliott) or Cymopolia eochoristosporica Elliott, restricted to the Arabian Plate and Tibet. Keywords Green algae . Larger benthic foraminifera . Taxonomy . Aruma formation . Systematics . Palaeobiogeography . Arabian plate
Introduction The Upper Cretaceous Tarbur Formation, named after the village of Tarbur (Fars Province), and cropping out in the SW Zagros basin, represents a predominantly carbonate lithostratigraphic unit that contains rich microfauna and microflora associated with rudists (James and Wynd 1965). It extends from the northwest to the southeast of the Zagros basin along the western edge of the imbricated Zagros zone, between the main Zagros fault and the Sabzposhan fault to the east (Alavi 2004). The Tarbur Formation overlies and interfingers (towards the southwest) with the Gurpi Formation. The microflora of the Tarbur Formation is rather poorly known and consists almost exclusively of calcareous green algae with a clear dominance of Dasycladales. Some taxa of dasycladalean algae were illustrated in some recently
* F. Schlagintweit K. Rashidi [email protected] 1
Department of Geology, Yazd University, 89195-741 Yazd, Iran
2
Munich, Germany
published papers (Abyat et al. 2012, 2015; Afghah 2016; Afghah and Farhoudi 2012; Afghah and Yaghmour 2014; Dehghani et al. 2016; Khosrow Tehrani and Afghah 2004). These determinations however are dubious if not incorrect and therefore require further investigations. First results and critical revisions of the microflora of the Tarbur Formation were published recently (Rashidi et al. 2013; Schlagintweit et al. 2016; Rashidi and Schlagintweit 2018). As already observed from the assemblages of larger benthic foraminifera, also the dasycladaleans exhibit varying occurrences in different sections of the Tarbur Formation. In the Mandegan section (e.g., Schlagintweit et al. 2016, b) for example, dasycladaleans occur in the middle pa
