Juan F. Diaz, Noritoshi Suzuki, Jennifer M. Galloway, M. Bringué
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引用次数: 0
摘要
摘要。尽管放射虫在沉积记录中的保存潜力相对较低,但它们已被证明是生物地层学和古环境研究中的特殊工具。关于北半球高纬度地区上白垩世放射虫的报道很少,而且在为数不多的文献中也很少讨论放射虫的分类问题。在这项研究中,我们描述了加拿大北极北部大陆海岸上白垩世地层中的一个新属和三个新种的多囊类放射虫。这些标本采自山顿纪-中坎帕尼亚期的 Smoking Hills 地层和中坎帕尼亚期-马斯特里赫特期的 Mason River 地层,被归入 Canadasphaera n. gen.属(Spumellaria 目)和 Canadasphaera inuita n. sp.种、本研究提供的分类注释提高了我们对北方高纬度地区晚白垩世放射虫的认识,为今后在北极地区开展白垩世放射虫研究奠定了基础。Canadasphaera:urn:lsid:zoobank.org:act:C6B7B702-4B74-472D-8893-0A41B93A5066,注册日期:19 April 2024 Canadasphaera inuita: urn:lsid:zoobank.org:act:C30E555B-EE94-4680-87D1-5CE83E128461, date of registration:2024 年 4 月 19 日 Kuppelella rusti: urn:lsid:zoobank.org:act:68ECB628-2E74-4748-ACA4-DD1A33B05837, 注册日期:2024 年 4 月 19 日 Lithocampe? rara:urn:lsid:zoobank.org:act:25E569B2-93A8-425F-BB7C-D29A0437763F,注册日期:2024 年 4 月 19 日:2024 年 4 月 19 日
Progress in the taxonomy of Late Cretaceous high-latitude radiolarians: insights from the Horton River area, Northwest Territories, Canada
Abstract. Radiolarians have proven to be exceptional tools in biostratigraphic and paleoenvironmental studies despite their relatively low preservation potential in the sedimentary record. Reports of Upper Cretaceous radiolarians in high northern latitudes are scant, and their taxonomy is not often discussed in the few reports available in the literature. In this study, we describe one new genus and three new species of polycystine radiolarians from Upper Cretaceous strata of the northern mainland coast of Arctic Canada. The specimens were recovered from the Santonian–middle Campanian Smoking Hills Formation and the middle Campanian–Maastrichtian Mason River Formation and are assigned to the genus Canadasphaera n. gen. (Order Spumellaria) and the species Canadasphaera inuita n. sp., Kuppelella rusti n. sp., and Lithocampe? rara n. sp. The taxonomic notes provided in this study improve our understanding of Late Cretaceous radiolarians from high northern latitudes and serve as a foundation for future Cretaceous radiolarian research in Arctic regions. Canadasphaera: urn:lsid:zoobank.org:act:C6B7B702-4B74-472D-8893-0A41B93A5066, date of registration: 19 April 2024 Canadasphaera inuita: urn:lsid:zoobank.org:act:C30E555B-EE94-4680-87D1-5CE83E128461, date of registration: 19 April 2024 Kuppelella rusti: urn:lsid:zoobank.org:act:68ECB628-2E74-4748-ACA4-DD1A33B05837, date of registration: 19 April 2024 Lithocampe? rara: urn:lsid:zoobank.org:act:25E569B2-93A8-425F-BB7C-D29A0437763F, date of registration: 19 April 2024
期刊介绍:
The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny.