Two new living Entactinaria (Radiolaria) species from the Arctic province: Joergensenium arcticum n. sp. and Joergensenium clevei n. sp
| Autor: | Kjell R. Bjørklund, Kohei Matsuno, Naomi Harada, Takahito Ikenoue, Paulian Dumitrica, Katsunori Kimoto, Anders K. Krabberød |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
010504 meteorology & atmospheric sciences biology medicine.diagnostic_test Paleontology Computed tomography Plankton Oceanography biology.organism_classification 01 natural sciences The arctic Species description 03 medical and health sciences 030104 developmental biology Taxon Arctic medicine Taxonomy (biology) Geology Radiolaria 0105 earth and related environmental sciences |
| Zdroj: | Marine Micropaleontology. 124:75-94 |
| ISSN: | 0377-8398 |
| Popis: | Radiolarians in the Arctic Ocean have been studied lately in both plankton and sediment trap samples in the Chukchi Sea area. These studies have shed light on new radiolarian taxa, especially within the order Entactinaria, including two new species of Joergensenium, Joergensenium arcticum from the western Arctic Ocean, so far restricted to the Pacific Winter Water in the Chukchi Sea, and Joergensenium clevei hitherto found in the northern part of the Norwegian Sea south of the Fram Strait. The taxonomic position of the order Entactinaria is discussed and the genus Joergensenium has been emended. We have also observed in detail the internal structure of Joergensenium arcticum using Microfocus X-ray Computed Tomography and have utilized three-dimensional imaging for the first time in a species description. |
| Databáze: | OpenAIRE |
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