产自伊朗上马斯特里赫特岛的子宫虫

IF 1.5 4区地球科学 Q2 GEOLOGY

Carnets De Geologie Pub Date : 2019-04-02 DOI:10.4267/2042/69755

K. Rashidi, F. Schlagintweit

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引用次数: 1

摘要

伊朗西南部扎格罗斯地区马斯特里赫特阶Tarbur组晚期的一种新的大环藻被描述为Uteria naghanensis n.sp。它是一种中小型、钙化良好的物种，每个小的物品上都有一个可育的安瓿，与许多不育的侧部的紧密垂直线交替。另一个特点是它的主轴相对较宽。米其林子宫属（Uteria Michelin）迄今为止只在古近纪（大年-吕特期）发现。在Tarbur组的内地台杂砂岩中发现的纳汉南猿属（U.naghanensis n.sp.）记录了该属的起源于属于阿拉伯板块的最上白垩纪。

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Uteria naghanensis n. sp. (Dasycladale) from the Upper Maastrichtian of Iran

A new dasycladalean alga is described as Uteria naghanensis n. sp. from the late Maastrichtian Tarbur Formation of the Zagros Zone, SW Iran. It is a small to medium-sized, rather well calcified species with small articles each bearing one fertile ampulla, alternating with close-set verticils of numerous sterile laterals. Another characteristic is its comparably wide main axis. The genus Uteria Michelin was so far only known from the Paleogene (Danian-Lutetian). The discovery of U. naghanensis n. sp. in inner platform wackestone of the Tarbur Fm. documents the origination of the genus already in the uppermost Cretaceous within an area belonging to the Arabian Plate.

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