Upper Maastrichtian and Danian bryozoans from Northern Patagonia, Argentina
CRETACEOUS RESEARCH(2021)
摘要
The specimen-rich and diverse bryozoan fauna encrusting oyster shells from the Maastrichtian and Danian Jaguel and Roca formations in the Neuquen Basin (Patagonia, Argentina) is described. Thirteen cyclostome species are recorded, along with 18 cheilostomes. We introduce two new species: Akatopora kaufmanni sp. nov. and Eoporella lunata gen. et sp. nov. The latter is a homeomorph of the common Miocene-Recent genus Microporella. Ten of the cyclostomes and ten of the cheilostomes could not be identified at species-level because of preservational limitations or lack of diagnostic characters in the available specimens. The most common bryozoans present are sheet-like colonies, among which the ascophoran cheilostome Balantiostoma is particularly well represented. Results show that in northern Patagonia the diversity of encrusting bryozoans associated with oyster shells exhibits no major changes across the K/Pg boundary. However, an important increase in the diversity is recorded during the upper Danian. (C) 2021 Elsevier Ltd. All rights reserved.
更多查看译文
关键词
Taxonomy,Cyclostomata,Cheilostomata,Maastrichtian,Danian,Neuquen Basin,Patagonia
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要