Cirsotrema matugisiense

• Main Authors: Sirenko, Boris I., Drobyazin, Evgeny N.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Architaenioglossa; Epitoniidae; Cirsotrema; Cirsotrema matugisiense; Greenland; okhotsk sea; Sakhalin
• Online Access: https://doi.org/10.5281/zenodo.11243516; http://treatment.plazi.org/id/124A9556FFECFFDBFE69FA7CD04EFDD7

Cirsotrema matugisiense (Ozaki, 1958) Figs. 1, 2B–F Epitonium ( Boreoscala ) matugisiensis Ozaki, 1958, p. 142, pl. 15, fig. 25 (fossil); Brown, Neville, 2015, p. 102 (fossil and Recent). Epitonium ( Boreoscala ) yokozunai Ozaki, 1958, p. 143, pl. 15, fig. 26 ( fide Nakayama [2003]) (fossil). Cirsotrema matugisiense (Ozaki, 1958): Nakayama, 2003, p. 29, pl. 4, figs. 23–27 (fossil and Recent); Tsushida, Hasegawa, 2017, p. 894, pl. 183, fig. 7 (fossil and Recent). Ty p e m a t e r i a l. The holotype (NSMT 4498). Ty p e l o c a l i t y. Cliff, 500 m south of Matugisi Railway Station, Tyosi City, Iioka Formation, Neogene. M a t e r i a l e x a m i n e d. The Sea of Japan, near western Sakhalin, 47°16.4′– 47°15.9′ N, 141°47.3′– 141°47.0′ E, depth 386–388 m, mud, R / V Bukhoro , research trawl, 2 specimens (ZISP 62489); 1 specimen (FEFU XII 53121 /Ga-10171), 04.07.2018, coll. E.N. Drobyazin; 47°16.5′– 47°15.9′ N, 141°45.2′– 141°44.6′ E, depth 521 m, mud, R / V Bukhoro , research trawl, 1 specimen, 28.05.07.2015, coll. I. Kornejchuk. D i s t r i b u t i o n. Japan: Boso Peninsula (fossil) [Nakayama, 2003; Tsuchida, Hasegawa, 2017], off Kunashir Island, Hokkaido, Japan [Nakayama, 2003] and the Sea of Japan, near western Sakhalin (this study). Nakayama [2003] was the first to report the discovery of this species in the Recent fauna near Kunashir Id. and Hokkaido. Unfortunately he did not give more detailed information about locality and depths. Specimens collected from western Sakhalin significantly advance the boundaries of the area of this species to the north and are the first find of the species off the coast of Russia. Reports of the distribution of this species off Greenland and in the Arctic seas [Tsuchida, 2000], appear to be associated with incorrect identifications. Kazunori Hasegawa (in e-mail message) informed that he has seen specimens of this species only from the north-western Pacific (eastern Hokkaido and northwards), Okhotsk Sea and northern Sea of Japan. Due to some differences between western Sakhalin ...