Kohno, Naoki: SEE ALSO Furusawa & Kohno, 1994; Hasegawa et al., 1988; Inuzuka et al., 2000.
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Kohno, Naoki
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1987 |
[Relationships of pinnipeds and other fossil mammals from the Mizunami Group.] In: Y. Hasegawa (ed.), [Study on fossil marine mammals from Japan. (Subject of study) Studies on biostratigraphy and paleontology of Cenozoic marine mammals.]
Japan, Ministry of Education, Aid for Scientific Study, Synthetic Study A, Subject No. 61304010: 29-34. 3 tabs. March 1987.
–In Japanese.
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Hasegawa, Yoshikazu; Okazaki, Yoshihiko; Kuga, Naoyuki; Kohno, Naoki
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1988 |
[Comparison of mammal fossils in the Tomikusa Formation, Mizunami Formation, and Isshi Formation.] In: Y. Hasegawa (ed.), [Study on fossil marine mammals from Japan. (Subject of study) Studies on biostratigraphy and paleontology of Cenozoic marine mammals.]
Japan, Ministry of Education, Aid for Scientific Study, Synthetic Study A, Subject No. 61304010: 15-17. 1 tab. 2 figs. March 1988.
–In Japanese.
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Kohno, Naoki; Hasegawa, Yoshikazu
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1988 |
[First discovery of Imagotaria from Japan and its significance.] In: Y. Hasegawa (ed.), [Study on fossil marine mammals from Japan. (Subject of study) Studies on biostratigraphy and paleontology of Cenozoic marine mammals.]
Japan, Ministry of Education, Aid for Scientific Study, Synthetic Study A, Subject No. 61304010: 87-89. 2 figs. March 1988.
–In Japanese.
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Kohno, Naoki; Takaizumi, Yukihiro
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1992 |
The first record of the halitheriine dugongid (Sirenia: Dugongidae) in the western North Pacific Ocean.
Fossils (Tokyo) 53: 1-6. 3 figs. Nov. 30, 1992.
–In Japanese; Engl. summ. Describes an upper third molar and a fragment of a lower molar from the Late Miocene Aoso Formation, Sendai Prefecture, Japan.
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Furusawa, Hitoshi; Kohno, Naoki
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1994 |
Steller's sea-cow (Sirenia: Hydrodamalis gigas) from the Middle Pleistocene Mandano Formation of the Boso Peninsula, central Japan.
Fossils No. 56: 26-32. 1 tab. 4 figs. June 1994.
–In Japanese; Engl. summ.
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Inuzuka, Norihisa; Kimura, Masaichi; Kohno, Naoki; Sawamura, Hiroshi (eds.)
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2000 |
Evolution of Desmostylia: incorporating the Proceeding[s] of the Desmostylian Symposium of the Fossil Research Society of Japan 16th Annual Meeting held at the Ashoro Museum of Paleontology, Hokkaido, Japan, 22-23 August 1998.
Bull. Ashoro Mus. Pal. No. 1: 1-172. Mar. 29, 2000.
–Includes a Preface by the editors (p. 7), and 12 papers, 11 of which are listed in this bibliography under their authors: Inuzuka (2), Ogasawara, Yahata & Kimura, Yahata, Igarashi et al., Taru, Kohno, Uno, Yamazaki & Umeda, and Yamazaki & Ikeuchi. Another paper, by Akihiko Suzuki (pp. 57-66), is on Miocene molluscan faunas and mentions desmostylians only in fig. 2.
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Kohno, Naoki
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2000 |
A centenary of studies on the holotype (NSM-PV 5600) of Desmostylus japonicus Tokunaga and Iwasaki, 1914. In: Inuzuka et al. (eds.), Evolution of Desmostylia ... (q.v.).
Bull. Ashoro Mus. Pal. No. 1: 137-151. 7 figs. Mar. 29, 2000.
–In Japanese; Engl. summ.
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Hasegawa, Yoshikazu; Kohno, Naoki
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2007 |
Case 3384: Cornwallius tabatai Tokunaga, 1939 (currently Paleoparadoxia tabatai; Mammalia, Desmostylia): proposed conservation of usage of the specific name by the designation of a neotype.
Bull. Zool. Nomenclature 64(2): 113-117. June 2007.
–In its Opinion 2232, the ICZN (2009) declined to take action on this proposal, on the grounds that Inuzuka's (2005) designation of a lectotype, which threatened the established usage, was invalid to start with. Consequently, Shikama's (1966) original designation of the Izumi skeleton as neotype of P. tabatai was maintained, as Hasegawa & Kohno desired.
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Kohno, Naoki; Yakushi, Daigoro; Kobayashi, Eiichi
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2007 |
Discovery of a skeleton of the Hydrodamalis sea cow from the Lower Pleistocene Iimuro Formation, Komae City, Tokyo, central Japan.
Fossils (Palaeont. Soc. Japan) 82: 1-2. 6 figs.
–In Japanese. Brief announcement with photographs of a partial skeleton including mandible, scapula, vertebrae, and ribs, associated with teeth of Carcharodon carcharias.
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Chiba, Kentaro; Fiorillo, Anthony R.; Jacobs, Louis L.; Kimura, Yuri; Kobayashi, Yoshitsugu; Kohno, Naoki; Nishida, Yosuke; Polcyn, Michael J.; Tanaka, Kohei
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2015 |
A new desmostylian mammal from Unalaska (USA) and the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids.
Historical Biology 28(1-2): 289-303. 1 tab. 9 figs. http://dx.doi.org/10.1080/08912963.2015.1046718 Publ. online Oct. 1, 2015.
–ABSTRACT: Derived members of the enigmatic mammalian order Desmostylia have molars comprising appressed columns whose morphology does not render their function in feeding simple to discern. Here we describe a new genus and species, Ounalashkastylus tomidai, more derived than Cornwallius but less derived than Desmostylus and Vanderhoofius, which develop a hypertrophied medial eminence on the dentary ontogenetically. Tooth morphology, vaulted palate and the medial eminence, which can rise to the level of the occlusal surface of M2, suggest that derived desmostylids clenched their teeth strongly while employing suction during feeding, most likely on marine and coastal plants.
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Matsui, Kumiko; Sashida, Katsuo; Agematsu, Sachiko; Kohno, Naoki
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2017 |
Habitat preferences of the enigmatic Miocene tethythere[s] Desmostylus and Paleoparadoxia (Desmostylia; Mammalia) inferred from the depositional depth of fossil occurrences in the Northwestern Pacific realm.
Palaeogeogr. Palaeoclim. Palaeoecol. 471: 254-265. 7 tabs. 7 figs. http://dx.doi.org/10.1016/j.palaeo.2017.02.005. Published online Feb. 8, 2017; Apr. 1, 2017.
–ABSTRACT: Desmostylus and Paleoparadoxia are extinct marine mammals belonging to the order Desmostylia that existed in the period between the late Oligocene and middle Miocene. All occurrences of their fossils are limited to marine strata along the coasts of the North Pacific Ocean. Although these two genera have similar body form, their paleoecologies including habitat preferences are thought to be different because their cranial structures are distinctive as well as they have been known separately in different localities. We estimated the depositional depths of their fossil occurrences on the basis of the associated mollusks and benthic foraminiferal assemblages from 45 desmostylian localities. Only data on complete or partial skeletal specimens were considered in order to exclude cases of reworking and pre-burial drift of carcasses that would confound our inference.
Our results indicate that the depositional environment of Desmostylus specimens was restricted to the inner sublittoral zone shallower than 30 m in depth whereas that of Paleoparadoxia specimens ranged from the inner sublittoral (0–50 m) to upper bathyal zone (between 150 and 400 and 500 m). This finding indicates that Desmostylus lived in nearshore water while Paleoparadoxia foraged in a relatively deep, offshore water. The depositional segregation of these two genera most likely reflects their different habitat preferences.
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Kohno, Naoki
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2024 |
Identification of a nearly complete skeleton of a paleoparadoxiid (Mammalia: Desmostylia) from the Lower to Middle Miocene Shukunohora Formation, Mizunami Group in Kamado Town, Mizunami City, central Japan.
Bulletin of the Mizunami Fossil Museum, Research reports of the Paleoparadoxiid Mizunami-Kamado specimen 50(3):43 50 DOI 10.50897/bmfm.50.343.
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Bibliography and Index of the Sirenia and Desmostylia 