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Revision of Porina-like cheilostome Bryozoa from the Campanian and Maastrichtian of Central Asia
Annales de Paléontologie ( IF 1.0 ) Pub Date : 2018-11-22 , DOI: 10.1016/j.annpal.2018.10.002
Anna V. Koromyslova , Silviu O. Martha , Alexey V. Pakhnevich

Porina-like cheilostome bryozoans are a taxonomically problematic group. They were moderately common in latest Cretaceous sediments throughout the world. However, the complexity of their tiny skeletons makes it difficult to describe species morphologically, especially as many features have no counterparts in Recent cheilostomes. In this contribution, we revise the type material of most known Porina-like cheilostomes from the Campanian and Maastrichtian of Central Asia using combined scanning electron microscopy and X-ray microtomography. The revised species are Diplobeisselina? abduazimovae (Favorskaya, 1992), Beisselinopsis quincunx Voigt, 1962, Pseudobathystomella lata Favorskaya, 1988, Beisselina bella Favorskaya, 1980 and Uzbekipora anplievae (Favorskaya, 1992). Pseudobathystomella mira sp. nov. is proposed for one colony previously identified as Pseudobathystomella lata, while one badly preserved specimen previously assigned to Beisselina bella is described here in open nomenclature as Beisselina? sp. The diagnosis of Pseudobathystomella Favorskaya, 1988 is amended. Uzbekipora gen. nov. is introduced for one species from the southern Aral Sea region in Uzbekistan showing a frontal shield traversed by a reticulate network of ridges that conceals autozooidal boundaries and encloses foraminate mounds.



中文翻译:

修订中亚的Campanian和Maastrichtian的porina样的cheilostome Bryozoa

似孔雀科的成虫状苔藓细菌是一个分类学上有问题的群体。它们在全世界最新的白垩纪沉积物中适度普遍。然而,它们微小的骨骼的复杂性使得很难用形态来描述物种,尤其是由于许多特征在近代化学存储器中没有对应物。在这项贡献中,我们使用扫描电子显微镜和X射线显微断层扫描相结合的方法,修改了来自中亚Campanian和Maastrichtian的最著名的Porina样化石的类型材料。修改过的物种是Diplobeisselinaabduazimovae(Favorskaya,1992),Beisselinopsis quincunx Voigt,1962,Pseudobathystomella lata Favorskaya,1988,Beisselina bella Favorskaya,1980和Uzbekipora anplievae(Favorskaya,1992)。假单胞菌米拉菌 十一月 有人建议为一个先前鉴定为假拟杆菌的菌落提出建议,而以前分配给贝塞斯利纳贝拉的一个保存不佳的标本在开放命名法下称为贝塞斯利纳?sp。的诊断Pseudobathystomella Favorskaya,1988是修正。Uzbekipora gen。十一月 乌兹别克斯坦咸海南部地区的一种鱼类被引入,显示出正面的盾牌被网状的山脊网穿越,该网状网掩盖了动物的边界并包围了有孔的土丘。

更新日期:2018-11-22
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