Niiyama, S.; Tanaka, G.; Komatsu, T.; Doan, H. D.; Nguyen, H. B.; Trinh, H. T.; Nguyen, M. T. (2019). Holocene ostracod assemblages from the Co To Islands, northeastern Vietnam. Journal of Micropalaeontology. 38(1): 97-111.

352107

10.5194/jm-38-97-2019 [view]

Niiyama, S.; Tanaka, G.; Komatsu, T.; Doan, H. D.; Nguyen, H. B.; Trinh, H. T.; Nguyen, M. T.

2019

38(1): 97-111

Publication

https://www.j-micropalaeontol.net/38/97/2019/jm-38-97-2019.pdf

Available for editors   [request]

In this study, we investigated ostracod assemblages from the Co To Islands in northeastern Vietnam. We identified 77 ostracod species belonging to 46 genera in nine surface sediment samples and recognized three biofacies (I, II, and III) based on Q-mode cluster analysis. The dominant species of biofacies I and II were Aurila hataii, Loxoconcha japonica, and Xestoleberis hanaii, which commonly occur in seaweed beds from southern China to Japan. This is the first report on the ostracod assemblage from the open-sea area in northeastern Vietnam. We clarified that the ostracod assemblages in the Gulf of Tongking, including northern Vietnam, have a strong biogeographical relationship with East Asia seas. A new species, Loxoconcha cotoensis sp. nov., was described herein from the Co To Islands (http://www.zoobank.org/NomenclaturalActs/ 41d3fb9f-ae17-4215-82c1-0874a8bf1a30, last access: 3 June 2019).

Indian Ocean

Systematics, Taxonomy

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