研究者総覧

楠橋 直 (クスハシ ナオ)

  • 大学院理工学研究科 数理物質科学専攻 准教授
Last Updated :2020/11/10

研究者情報

学位

  • 博士 (理学)(京都大学)

ホームページURL

科研費研究者番号

  • 70567479

J-Global ID

研究分野

  • 自然科学一般 / 固体地球科学 / 地質学
  • 自然科学一般 / 地球生命科学 / 古脊椎動物学

経歴

  • 2019年10月 - 現在  愛媛大学 大学院理工学研究科准教授
  • 2009年06月 - 2019年09月  愛媛大学 大学院理工学研究科助教
  • 2006年06月 - 2009年05月  中国科学院 古脊椎動物與古人類研究所ポスドク研究員
  • 2006年04月 - 2006年06月  京都大学 大学院理学研究科研修員

学歴

  • 2001年04月 - 2006年03月   京都大学 大学院   理学研究科   地球惑星科学専攻 博士後期課程
  • 1999年04月 - 2001年03月   京都大学 大学院   理学研究科   地球惑星科学専攻 修士課程
  • 1995年04月 - 1999年03月   京都大学   理学部

所属学協会

  • 日本動物考古学会   日本人類学会   日本堆積学会   日本古生物学会   日本地質学会   Society of Vertebrate Paleontology   

研究活動情報

論文

  • Liping Dong, Ryoko Matsumoto, Nao Kusuhashi, Yuanqing Wang, Yuan Wang, Susan E. Evans
    Journal of Systematic Palaeontology 18 15 1223 - 1242 2020年08月 [査読有り]
     研究論文(学術雑誌)
  • Kusuhashi, N, Wang, Y.-Q, Li, C.-K, Jin, X
    Vertebrata PalAsiatica 58 1 45 - 66 2020年01月 [査読有り]
     研究論文(学術雑誌)
  • 西岡 佑一郎, 楠橋 直, 高井 正成
    哺乳類科学 60 2 251 - 267 日本哺乳類学会 2020年 [査読有り]
     研究論文(学術雑誌)
  • Kusuhashi, N, Wang, Y.-Q, Jin, X
    Journal of Mammalian Evolution 2019年08月 [査読有り]
     研究論文(学術雑誌)
  • 仲田光輝, 楠橋 直, 齊藤 哲, 大藤弘明, 奈良正和
    地質学雑誌 125 6 447 - 452 2019年06月 [査読有り]
     研究論文(学術雑誌)
  • 酒井 佑輔, 堤 之恭, 楠橋 直, 薗田 哲平, 堀江 憲路, 松岡 篤
    地質学雑誌 125 3 255 - 260 一般社団法人 日本地質学会 2019年 [査読有り]
     研究論文(学術雑誌) 

    The Tetori Group in the Shiramine area (Ishikawa Prefecture, central Japan) is subdivided into the Gomijima, Kuwajima, Akaiwa, and Kitadani formations (from bottom to top). A variety of animal and plant fossils have been reported from the Kuwajima, Akaiwa, and Kitadani formations, but the depositional ages are still poorly constrained. We obtained the first reliable zircon U-Pb age from the Akaiwa Formation of the Tetori Group in the Shiramine area using laser ablation inductively coupled plasma mass spectrometry. The dated sample was taken from the lower part of the Akaiwa Formation along the Osugidani River (Shiramine area), and its U-Pb age is 121.2±1.1 Ma (95% confidence interval).

  • Wang, Y.-Q, Kusuhashi, N, Jin, X, Li, C.-K, Setoguchi, T, Gao, C.-L, Liu, J.-Y
    Vertebrata PalAsiatica 56 3 180 - 192 2018年07月 [査読有り]
     研究論文(学術雑誌)
  • 高井正成, 楠橋 直, 西岡佑一郎, タウン タイ・ジン, マウン マウン テイン
    化石 103 5 - 20 2018年03月 [査読有り]
     研究論文(学術雑誌)
  • Upper Triassic (Carnian) mollusks from the Suoi Bang Formation in Me area, Ninh Binh Province, northern Vietnam
    Komatsu, T, Shigeta, Y, Doan, H. D, Trinh, H. T, Nguyen, H. B, Nguyen, M. T, Kusuhashi, N, Tsuihiji, T, Maekawa, T, Legrand, J, Manabe, M
    Bulletin of the National Museum of Nature and Science, Series C 43 1 - 10 2017年12月 [査読有り]
     研究論文(学術雑誌)
  • 奈良正和, 楠橋 直, 岡本 隆, 今井 悟
    地質学雑誌 123 7 471 - 489 2017年07月 [査読有り]
  • Romain Amiot, Delphine Angst, Serge Legendre, Eric Buffetaut, Francois Fourel, Jan Adolfssen, Aurore Andre, Ana Voica Bojar, Aurore Canoville, Abel Barral, Jean Goedert, Stanislaw Halas, Nao Kusuhashi, Ekaterina Pestchevitskaya, Kevin Rey, Aurelien Royer, Antonio Alamo Feitosa Saraiva, Berengere Savary-Sismondini, Jean-Luc Simeon, Alexandra Touzeau, Zhonghe Zhou, Christophe Lecuyer
    SCIENCE OF NATURE 104 5-6 47  2017年06月 [査読有り]
     研究論文(学術雑誌) 
    Oxygen isotope compositions of bone phosphate (delta O-18(p)) were measured in broiler chickens reared in 21 farms worldwide characterized by contrasted latitudes and local climates. These sedentary birds were raised during an approximately 3 to 4-month period, and local precipitation was the ultimate source of their drinking water. This sampling strategy allowed the relationship to be determined between the bone phosphate delta O-18(p) values (from 9.8 to 22.5% V-SMOW) and the local rainfall delta O-18(w) values estimated from nearby IAEA/WMO stations (from -16.0 to -1.0% V-SMOW). Linear least square fitting of data provided the following isotopic fractionation equation: delta O-18(w) = 1.119 (+/- 0.040) delta O-18(p) - 24.222 (+/- 0.644); R-2 = 0.98. The delta O-18(p)-delta O-18(w) couples of five extant mallard ducks, a common buzzard, a European herring gull, a common ostrich, and a greater rhea fall within the predicted range of the equation, indicating that the relationship established for extant chickens can also be applied to birds of various ecologies and body masses. Applied to published oxygen isotope compositions of Miocene and Pliocene penguins from Peru, this new equation computes estimates of local seawater similar to those previously calculated. Applied to the basal bird Confuciusornis from the Early Cretaceous of Northeastern China, our equation gives a slightly higher delta O-18(w) value compared to the previously estimated one, possibly as a result of lower body temperature. These data indicate that caution should be exercised when the relationship estimated for modern birds is applied to their basal counterparts that likely had a metabolism intermediate between that of their theropod dinosaur ancestors and that of advanced ornithurines.
  • 楠橋 直, 西村智弘, 大藤弘明, 皆川鉄雄, 齊藤 哲, 前田晴良
    むかわ町穂別博物館研究報告 32 43 - 58 2017年03月
  • Nao Kusuhashi, Tadashi Suzuki, Kazuaki Terui, Atsushi Sato, Romain Amiot
    ISLAND ARC 25 6 403 - 409 2016年11月 [査読有り]
     研究論文(学術雑誌) 
    A mammalian dentary discovered in the Coniacian Ashizawa Formation (Fukushima, northeastern Japan) is described. The specimen is a fragment of the horizontal ramus of a left edentulous dentary with five alveoli, the distal four of which are plugged with broken roots. Based on the morphologies of the dentary and the roots, it is considered to be of a therian mammal. This constitutes the first discovery of a Mesozoic mammal in northeastern Japan and highlights the potential for future mammal discoveries in the Cretaceous System in northeastern Japan, which will be significant for disclosure of the mammalian faunal evolution in East Asia during the Late Cretaceous.
  • Nao Kusuhashi, Yuan-Qing Wang, Chuan-Kui Li, Xun Jin
    HISTORICAL BIOLOGY 28 1-2 14 - 26 2016年02月 [査読有り]
     研究論文(学術雑誌) 
    Two new gobiconodontid mammals, Gobiconodon tomidaisp. nov. and Gobiconodon haizhouensissp. nov., from the Lower Cretaceous (Aptian to Albian) Shahai and Fuxin Formations, respectively, in Liaoning Province, northeastern China, are described. Gobiconodon tomidaisp. nov. is a small-sized species of the genus characterised by the lower dental formula 2.1.2.5, a double-rooted p2, the molariform crown being mesiodistally longer than tall, and a distinct and almost continuous lingual cingulid on m2-m4. Gobiconodon haizhouensissp. nov. is of similar size to Gobiconodon tomidaisp. nov. and is characterised by the lower dental formula 2.1.3.5, the molariform crown being slightly taller than the mesiodistal length, and a well-developed and almost continuous lingual cingulid on m1-m3. The new materials indicate that the upper molariform count of most species of Gobiconodon is likely to be four, one less than the lower molariform count. Gobiconodon is the second mammalian genus common to the Jehol and Fuxin mammalian faunas.http://www.zoobank.org/urn:lsid:zoobank.org:pub:608F5A43-AE4D-41CF-A2E4-1C9C6CFCA67C
  • Hiroshige Matsuoka, Nao Kusuhashi, Ian J. Corfe
    JOURNAL OF VERTEBRATE PALEONTOLOGY 36 4 e1112289  2016年 [査読有り]
     研究論文(学術雑誌) 
    We describe tritylodontid remains from the Lower Cretaceous Kuwajima Formation (Tetori Group) in central Japan as representing a new genus, Montirictus kuwajimaensis, gen. et sp. nov. Montirictus is a medium-sized tritylodontid genus characterized by upper cheek teeth having the cusp formula 2-2-2 with subequal cusps, buccal and lingual cusps retaining a crescentic shape with both buccal and lingual ridges anteriorly, and 'V'-shaped buccolingual cross-sections of two anteroposterior grooves between the three cusp rows. Tentative dating of the Kuwajima Formation to the Barremian-Aptian makes it the stratigraphically youngest representative of a long-lived, globally distributed and abundant mammaliamorph lineage and extends the known geographic range of tritylodontids.
  • Jean Goedert, Romain Amiot, Larbi Boudad, Eric Buffetaut, Francois Fourel, Pascal Godefroit, Nao Kusuhashi, Varavudh Suteethorn, Haiyan Tong, Mahito Watabe, Christophe Lecuyer
    PALAIOS 31 1 10 - 19 2016年01月 [査読有り]
     研究論文(学術雑誌) 
    Oxygen isotope compositions of tooth enamel increments in theropod dinosaurs are investigated as potential climate seasonality. Six teeth of large carnivorous theropods collected from four Cretaceous formations deposited under contrasted climates have been sampled. These teeth have been analyzed for the oxygen isotope compositions of their apatite phosphate (delta O-18(p)) through incremental sampling performed along the major growth axis. Significant fluctuations in oxygen isotope compositions along the growth axis of each tooth are observed and interpreted as reflecting seasonality in ingested local surface water delta O-18(w) values. Fluctuations in delta O-18(p) values of theropod teeth from the Aptian of Thailand and Cenomanian of Morocco vary similarly to meteoric water d delta O-18(mw) values occurring today in sub-tropical regions subjected to large seasonal amounts of precipitations. A dinosaur tooth recovered from the more inland and mid-latitude Nemegt Formation of Mongolia shows a seasonal pattern similar to present-day cold temperate and continental climate. Finally, the high latitude and coastal Kakanaut Formation (Russia) experienced strongly dampened seasonal variations, most likely due to the influence of warm Pacific oceanic currents. Such conditions occur today in high latitude regions submitted to marine influence. These results further highlight the potential of using the oxygen isotope compositions of large theropod teeth to reconstruct past seasonal variations of terrestrial climates. Increased knowledge of past seasonality may help to better understand the complex interactions between climate and the dynamics of land biodiversity in terms of ecological adaptations, biogeography and the evolutionary history of organisms.
  • 楠橋 直, 岡本 隆
    化石 97 23 - 37 2015年03月 [査読有り]
  • Romain Amiot, Xu Wang, Zhonghe Zhou, Xiaolin Wang, Christophe Lecuyer, Eric Buffetaut, Frederic Fluteau, Zhongli Ding, Nao Kusuhashi, Jinyou Mo, Marc Philippe, Varavudh Suteethorn, Yuanqing Wang, Xing Xu
    JOURNAL OF ASIAN EARTH SCIENCES 98 358 - 370 2015年02月 [査読有り]
     研究論文(学術雑誌) 
    During the cold Late Barremian-Early Albian interval, terrestrial environments in East Asia were populated by rich and diverse vertebrate faunas characterized by a strong provincialism. The latitudinal gradient of temperature and the existence of geographic barriers likely accounted for some aspects of this heterogeneous distribution of faunas. Other factors, however, such as local environmental conditions and interactions within vertebrate communities, which could have influenced their distribution, have not yet been fully identified and understood. Therefore, new and published oxygen and carbon isotope compositions of apatite from Chinese and Thai reptiles (dinosaurs, crocodilians and turtles) have been analyzed and interpreted in terms of ecology, local air temperature and precipitation amounts. Differences in carbon and oxygen isotope compositions between various groups of sympatric plant-eating dinosaurs (sauropods, ornithopods and ceratopsians) indicate food resources partitioning among them most likely to avoid competition. Mid-latitude environments, where the Jehol Biota flourished, were submitted to cool temperate climatic conditions with Mean Air Temperature (MAT) of 10 +/- 4 degrees C and Mean Annual Precipitations (MAP) of about 600 mm/yr compatible with the existence of forest environments. By contrast, sub-tropical regions, characterized by MAT of about 20-25 degrees C were either submitted to high amounts of seasonal precipitations (of about 1200 mm/yr in Thailand) or to significant aridity (MAP of about 400 mm/yr in South China). This difference in precipitation regime between Thailand and South China may be attributed to the occurrence of the Coastal Cordillera extending along the East margin of the South China block. These mountain ranges likely prevented humid air masses from the Pacific to penetrate some parts of South China, thus generating a "rain shadow effect". Mosaic environments characterizing East Asia during the Late Early Cretaceous may have acted as a cradle for the origination of advanced dinosaur taxa that subsequently radiated over Eurasia and North America during the Late Cretaceous. (C) 2014 Elsevier Ltd. All rights reserved.
  • Romain Amiot, Xu Wang, Zhonghe Zhou, Xiaolin Wang, Christophe Lecuyer, Eric Buffetaut, Frederic Fluteau, Zhongli Ding, Nao Kusuhashi, Jinyou Mo, Marc Philippe, Varavudh Suteethorn, Yuanqing Wang, Xing Xu
    JOURNAL OF ASIAN EARTH SCIENCES 98 358 - 370 2015年02月 [査読有り]
     研究論文(学術雑誌) 
    During the cold Late Barremian-Early Albian interval, terrestrial environments in East Asia were populated by rich and diverse vertebrate faunas characterized by a strong provincialism. The latitudinal gradient of temperature and the existence of geographic barriers likely accounted for some aspects of this heterogeneous distribution of faunas. Other factors, however, such as local environmental conditions and interactions within vertebrate communities, which could have influenced their distribution, have not yet been fully identified and understood. Therefore, new and published oxygen and carbon isotope compositions of apatite from Chinese and Thai reptiles (dinosaurs, crocodilians and turtles) have been analyzed and interpreted in terms of ecology, local air temperature and precipitation amounts. Differences in carbon and oxygen isotope compositions between various groups of sympatric plant-eating dinosaurs (sauropods, ornithopods and ceratopsians) indicate food resources partitioning among them most likely to avoid competition. Mid-latitude environments, where the Jehol Biota flourished, were submitted to cool temperate climatic conditions with Mean Air Temperature (MAT) of 10 +/- 4 degrees C and Mean Annual Precipitations (MAP) of about 600 mm/yr compatible with the existence of forest environments. By contrast, sub-tropical regions, characterized by MAT of about 20-25 degrees C were either submitted to high amounts of seasonal precipitations (of about 1200 mm/yr in Thailand) or to significant aridity (MAP of about 400 mm/yr in South China). This difference in precipitation regime between Thailand and South China may be attributed to the occurrence of the Coastal Cordillera extending along the East margin of the South China block. These mountain ranges likely prevented humid air masses from the Pacific to penetrate some parts of South China, thus generating a "rain shadow effect". Mosaic environments characterizing East Asia during the Late Early Cretaceous may have acted as a cradle for the origination of advanced dinosaur taxa that subsequently radiated over Eurasia and North America during the Late Cretaceous. (C) 2014 Elsevier Ltd. All rights reserved.
  • 越智真人, 間宮隆裕, 楠橋 直
    地質学雑誌 120 5 165 - 179 2014年05月 [査読有り]
     研究論文(学術雑誌)
  • Yasuyuki Tsujino, Yasunari Shigeta, Haruyoshi Maeda, Toshifumi Komatsu, Nao Kusuhashi
    ISLAND ARC 22 4 549 - 561 2013年12月 [査読有り]
     研究論文(学術雑誌) 
    Discovery of Sirenites senticosus (Dittmar) in the upper part of the Sabudani Formation of the Kurosegawa Belt, Kito area, Tokushima Prefecture, Japan, establishes a late Early Carnian age for this part of the stratigraphic unit. Because S.senticosus was mainly distributed in the Tethyan region, its occurrence provides evidence that Late Triassic ammonoids of Japan had strong affinities with those of the Tethyan faunas. This finding clearly differs from the biogeographic distribution of contemporary bivalves in the region, which are referred to as the Kochigatani bivalve faunas, and show strong affinities to faunas of the Boreal region.
  • Nao Kusuhashi, Yukiyasu Tsutsumi, Haruo Saegusa, Kenji Horie, Tadahiro Ikeda, Kazumi Yokoyama, Kazuyuki Shiraishi
    Proceedings of the Royal Society B: Biological Sciences 280 1759 20130142  2013年 [査読有り]
     研究論文(学術雑誌) 
    We here describe a new Early Cretaceous (early Albian) eutherian mammal, Sasayamamylos kawaii gen. et sp. nov., from the 'Lower Formation' of the Sasayama Group, Hyogo Prefecture, Japan. Sasayamamylos kawaii is characterized by a robust dentary, a distinct angle on the ventral margin of the dentary at the posterior end of the mandibular symphysis, a lower dental formula of 3-4: 1: 4: 3, a robust lower canine, a non-molariform lower ultimate premolar, and a secondarily reduced entoconid on the molars. To date, S. kawaii is the earliest known eutherian mammal possessing only four premolars, which demonstrates that the reduction in the premolar count in eutherians started in the late Early Cretaceous. The occurrence of S. kawaii implies that the relatively rapid diversification of eutherians in the mid-Cretaceous had already started by the early Albian. © 2013 The Author(s) Published by the Royal Society. All rights reserved.
  • Romain Amiot, Xu Wang, Zhonghe Zhou, Xiaolin Wang, Eric Buffetaut, Christophe Lecuyer, Zhongli Ding, Frederic Fluteau, Tsuyoshi Hibino, Nao Kusuhashi, Jinyou Mo, Varavudh Suteethorn, Yuanqing Wang, Xing Xu, Fusong Zhang
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 108 13 5179 - 5183 2011年03月 [査読有り]
     研究論文(学術雑誌) 
    Early Cretaceous vertebrate assemblages from East Asia and particularly the Jehol Biota of northeastern China flourished during a period of highly debated climatic history. While the unique characters of these continental faunas have been the subject of various speculations about their biogeographic history, little attention has been paid to their possible climatic causes. Here we address this question using the oxygen isotope composition of apatite phosphate (delta(18)O(p)) from various reptile remains recovered from China, Thailand, and Japan. delta(18)O(p) values indicate that cold terrestrial climates prevailed at least in this part of Asia during the Barremian-early Albian interval. Estimated mean air temperatures of about 10 +/- 4 degrees C at midlatitudes (similar to 42 degrees N) correspond to present day cool temperate climatic conditions. Such low temperatures are in agreement with previous reports of cold marine temperatures during this part of the Early Cretaceous, as well as with the widespread occurrence of the temperate fossil wood genus Xenoxylon and the absence of thermophilic reptiles such as crocodilians in northeastern China. The unique character of the Jehol Biota is thus not only the result of its evolutionary and biogeographical history but is also due to rather cold local climatic conditions linked to the paleolatitudinal position of northeastern China and global icehouse climates that prevailed during this part of the Early Cretaceous.
  • Romain Amiot, Nao Kusuhashi, Xing Xu, Yuanqing Wang
    JOURNAL OF ASIAN EARTH SCIENCES 39 5 347 - 358 2010年10月 [査読有り]
     研究論文(学術雑誌) 
    Isolated dinosaur teeth recovered from seven localities near Fuxin (western Liaoning Province, northeastern China) are described. They come from sediments belonging to the Shahai and Fuxin formations, considered to be Aptian to Albian in age. Seven taxa have been recognized. They include the oviraptorosaur Incisivosaurus, dromaeosaurid theropods, Euhelopus-like sauropods, as well as indeterminate nodosaurid, ankylosaurid, iguanodontoid and basal neoceratopsian ornithischians. The Shahai and Fuxin dinosaur faunas show the persistence of some Jehol biota taxa such as the highly specialised Incisivosaurus, basal titanosauriform sauropods, basal neoceratopsians and some dromaeosaurids, and the addition of more derived iguanodontoids and ankylosaurians. The persistence of some dinosaurs of the Jehol Biota into the Shahai and Fuxin formations suggests a long term stability of Liaoning terrestrial environments during the Early Cretaceous. Despite sampling bias and the rather small sample that must be taken into account, teeth abundances show a significant compositional difference between the localities of the Shahai and Fuxin formations, neoceratopsian teeth representing one third of dinosaur tooth remains in the Shahai Formation whereas they are totally absent in the Fuxin Formation. Ankylosaur teeth, in contrast, represent 3% of total remains in the Shahai Formation, whereas they seem to be the only herbivorous dinosaurs in the Fuxin Formation with 40% of the total number of teeth (the rest being theropod dinosaur teeth). Although a difference in micro-environmental conditions between Shahai and Fuxin localities may at least partly explain such pattern, the unusual and unbalanced faunal composition of Fuxin localities remains enigmatic and will need further field collecting in order to be clarified. (C) 2010 Elsevier Ltd. All rights reserved.
  • Nao Kusuhashi, Yaoming Hu, Yuanqing Wang, Takeshi Setoguchi, Hiroshige Matsuoka
    JOURNAL OF VERTEBRATE PALEONTOLOGY 30 5 1501 - 1514 2010年 [査読有り]
     研究論文(学術雑誌) 
    Two eobaatarid multituberculates, Heishanobaatar triangulus gen. et sp. nov. and Eobaataridae gen. et sp. indet., and an ?albionbaatarid multituberculate, Kielanobaatar badaohaoensis gen. et sp. nov., from the Lower Cretaceous (Aptian to Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China, are described. Heishanobaatar triangulus is a moderate-sized multituberculate characterized by lower jaw dental formula 1.0.3.2, slender lower incisor, single-rooted p2, triangular p3 in lateral view, p4 with eight serrations, m1 with cusp formula 2:2, and m2 with cusp formula 1 (coalesced):2. Kielanobaatar badaohaoensis is characterized by upper anterior premolars with relatively flat occlusal surfaces, roughly pentangular P1 in occlusal view, P1 and P2 with three cusp rows (cusp formulae 1:3:2), and P3 with four cusps (cusp formula 2:2). Together with already described three species of eobaatarids from the same localities, they demonstrate that there were quite diverse multituberculates in Asia in the late Early Cretaceous, and suggest that the mammalian fauna known from the Shahai and Fuxin formations probably show a transitional state from the mammalian fauna of the Yixian Formation to Late Cretaceous Asian faunas.
  • Nao Kusuhashi, Yaoming Hu, Yuanqing Wang, Takeshi Setoguchi, Hiroshige Matsuoka
    JOURNAL OF VERTEBRATE PALEONTOLOGY 29 4 1264 - 1288 2009年12月 [査読有り]
     研究論文(学術雑誌) 
    Two eobaatarid multituberculate genera including three species front the Lower Cretaceous (Aptian-Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China are described here: Sinobaatar xiei sp. nov., S. fuxinensis sp. nov., and Liaobaatar changi gen. et sp. nov. Sinobaatar xiei is characterized by in I with cusp formula 3:2 (labial:lingual), P4 with cusp formula 2:4. blade-like P5 with three cusps anteroposteriorly arranged, M I with cusp formula 4:4, and M2 with cusp formula 3:4. P1 to P3 of S. xiei lack distinct posterior cingulum. Sinobaatar fuxinensis has a more distinct posterior cingulum on P1 to P3, and its M2 has cusp formula 3:3. Sinobaatar xiei is within the size range of most other eobaatarids, and S. fuxinensis is slightly larger than S. xiei. Liaobaatar changi is clearly larger than other eobaatarids. The ratio of p4 length and height of L. changi and S. xiei (L./S.) are 1.9 and 1.7, respectively. Liaobaatar changi is also characterized by nil with cusp formula 3:3. A specimen of S. fuxinensis indicates that tooth replacement in eobaatarids occurred in the typical backward sequence seen in Late Cretaceous-Tertiary multituberculates.
  • Nao Kusuhashi, Yaoming Hu, Yuanqing Wang, Satoshi Hirasawa, Hiroshige Matsuoka
    GEOBIOS 42 6 765 - 781 2009年11月 [査読有り]
     研究論文(学術雑誌) 
    The first triconodontids from Asia have been discovered from the Lower Cretaceous (Aptian to Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China: Meiconodon lii gen. and sp. nov. and M. setoguchii gen. and sp. nov. M. lii is characterized by molariform teeth with a developed cusp d, an m3 with taller cusp a, an m4 with three primary cusps of subequal height, the posteriorly decreasing transverse width of the m4, and a considerably reduced m5. M. seloguchii is slightly larger than M. lii, and characterized by a sharp labial cingulum on the m4, and a less developed cusp d on the molariform teeth than M. lii. The extensive interlocking system between molariforms, posteriorly recumbent primary molariform cusps, and their great degree of asymmetry in occlusal view with rounded labial faces and more angulate lingual faces in lateral view, indicate that Meiconodon belongs to the triconodontid subfamily Alticonodontinae. These new taxa are the first record of Triconodontidae from Asia, and of Alticonodontinae outside North America, suggesting the occurrence of mammalian faunal exchange between North America and Asia during or before the Aptian-Albian. (C) 2009 Elsevier Masson SAS. All fights reserved.
  • Nao Kusuhashi
    ACTA PALAEONTOLOGICA POLONICA 53 3 379 - 390 2008年09月 [査読有り]
     研究論文(学術雑誌) 
    Hakusanobaatar matsuoi gen. et sp. nov. and Tedoribaatar reini gen. et sp. nov. are multituberculate mammals recovered from the Lower Cretaceous (Barremian to lower Aptian) Kuwajima Formation of the Tetori Group in the Shiramine district, Hakusan City, Ishikawa Prefecture, central Japan. Hakusanobaatar matsuoi is an eobaatarid multituberculate characterized by a P4 with cusp formula 3:5, and a P5 with cusp formula 2:6:?2. One of the specimens of H. matsuoi has the best preserved upper premolar series among known eobaatarid specimens. Based on the dentition of H. matsuoi, it is highly probable that the cimolodontan P4 is homologous with the "plagiaulacidan" P5. Tedoribaatar reini is also tentatively attributed to Eobaataridae, and shows a single-rooted p3 and loss of at least the permanent p2. On the basis of these apomorphic features, T reini is considered to be the "plagiaulacidan" multituberculate that is most closely related to cimolodontans.
  • Nao Kusuhashi, Naoki Ikegami, Hiroshige Matsuoka
    PALEONTOLOGICAL RESEARCH 12 2 199 - 203 2008年06月 [査読有り]
     研究論文(学術雑誌)
  • Nao Kusuhashi, Ai Matsumoto, Masaki Murakami, Takahiro Tagami, Takafumi Hirata, Tsuyoshi Iizuka, Takeshi Handa, Hiroshige Matsuoka
    ISLAND ARC 15 3 378 - 390 2006年09月 [査読有り]
     研究論文(学術雑誌) 
    The upper Mesozoic Tetori Group contains numerous fossils of plants and marine and non-marine animals. The group has the potential to provide key information to improve our understanding of the Middle Jurassic to Early Cretaceous biota of East Asia. However, the depositional age of the Tetori Group remains uncertain, and without good age constraints, accurate correlation with other areas is very difficult. As a first step in obtaining reliable ages for the formations within the Tetori Group, we used laser ablation-inductively coupled plasma-mass spectrometry to measure the U-Pb ages of zircons collected from tuff beds in the Shokawa district, Takayama City, Gifu Prefecture, central Japan. The youngest reliable U-Pb ages from the tuff beds of the Ushimaru, Mitarai and Okurodani Formations are 130.2 +/- 1.7, 129.8 +/- 1.0 and 117.5 +/- 0.7 Ma, respectively (errors represent 2 SE). These results indicate that the entire Tetori Group in the Shokawa district, which was previously believed to be correlated to the Upper Jurassic to Lower Cretaceous, is in fact correlated to the Lower Cretaceous. The maximum ages of the Ushimaru, Mitarai and Okurodani Formations are late Hauterivian to Barremian, late Hauterivian to Barremian and Barremian to Aptian, respectively.
  • H Kamiya, T Yoshida, N Kusuhashi, H Matsuoka
    MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS 26 4 707 - 709 2006年05月 [査読有り]
     研究論文(学術雑誌) 
    Fossil teeth of the early Cretaceous mammal-like reptile (Tritylodontidae) were observed in the internal texture in relation to tooth development and evolution. The materials were discovered from the Tetori Group which is distributed in the western area of the central mountains of Japan, and these materials are the first mammal-like reptile discovered from the Cretaceous strata in the world. The authors investigated these fossil teeth of Tritylodontidae which is considered as most evolved mammal-like reptile in their microstructure, and found the characteristic texture of the enamel which is similar to the enamel prism which is common in the enamel of the modern mammals. (c) 2005 Elsevier B.V. All rights reserved.
  • 楠橋 直, 山路 敦
    地質學雜誌 107 1 26 - 40 日本地質学会 2001年01月 [査読有り]

講演・口頭発表等

  • 愛媛県中部の始新統ひわだ峠層の層序  [通常講演]
    楠橋 直, 安藤友一, 松原尚志, 奈良正和, 栗田裕司, 山路 敦
    日本地質学会第124年学術大会 2017年09月 口頭発表(一般)
  • Reinvestigation of an Early Cretaceous eutherian mammal Endotherium niinomii  [通常講演]
    Kusuhashi, N, Wang, Y.-Q, d Li, C.-K
    4th International Symposium of the IGCP 608, Cretaceous Ecosystems and Their Responses to Paleoenvironmental Changes in Asia and the Western Pacific 2016年08月 ポスター発表
  • 前期白亜紀真獣類 Endotherium niinomii の再検討  [通常講演]
    楠橋 直, 王 元青, 李 傳Kui
    日本古生物学会第165回例会 2016年01月 口頭発表(一般)
  • Early Cretaceous "triconodont" mammals from the Kuwajima Formation (Tetori Group), Ishikawa, central Japan  [通常講演]
    KUSUHASHI Nao
    12th Symposium on Mesozoic Terrestrial Ecosystems 2015年08月 ポスター発表
  • A mammal jaw from the Upper Cretaceous Ashizawa Formation (Futaba Group), Fukushima, northeastern Japan  [通常講演]
    Kusuhashi, N, Suzuki, T, Terui, K, Sato, A, Amiot, R
    2nd International Symposium of the IGCP 608, Cretaceous Ecosystems and Their Responses to Paleoenvironmental Changes in Asia and the Western Pacific 2014年09月 ポスター発表
  • 中国遼寧省の沙海層・阜新層から産出する前期白亜紀哺乳類化石群  [通常講演]
    楠橋 直, 王 元青
    日本古生物学会第162回例会 2013年01月 口頭発表(一般)
  • A new Early Cretaceous eutherian mammal from the “Lower Formation” of the Sasayama Group, Sasayama, Hyogo, Japan  [通常講演]
    Kusuhashi, N, Saegusa, H, Ikeda, T, Tanaka, S
    6th International Symposium of the IGCP 507, Paleoclimates of the Cretaceous in Asia and Their Global Correlation 2011年08月 ポスター発表
  • 兵庫県篠山市の篠山層群“下部層”より産出した前期白亜紀真獣類化石  [通常講演]
    楠橋 直, 三枝春生, 池田忠広, 田中里志
    日本古生物学会第160回例会 2011年01月 口頭発表(一般)
  • 石川県白山市手取層群桑島層産の前期白亜紀“三錐歯類”  [通常講演]
    楠橋 直, 鍔本武久
    日本古生物学会2010年年会 2010年06月 ポスター発表
  • Early Cretaceous multituberculate and "triconodont" mammals from East Asia: their paleobiogeographical implications  [通常講演]
    Kusuhashi, N, Hu, Y.-M, Wang, Y.-Q, Hirasawa, S, Tsubamoto, T
    4th International Symposium of the IGCP 507, Paleoclimates of the Cretaceous in Asia and Their Global Correlation 2009年12月 口頭発表(一般)
  • 遼寧阜新早白亜世真三尖歯獣類化石的研究  [通常講演]
    楠橋 直, 胡 耀明, 王 元青, 平澤 聡
    中国古脊椎動物学会第十一次学術年会 2008年09月 口頭発表(一般)
  • Early Cretaceous eutriconodontans and multituberculates (Mammalia) from the Shahai and Fuxin formations, northeastern China  [通常講演]
    Kusuhashi, N, Hu, Y.-M, Wang, Y.-Q
    Mid-Mesozoic Life and Environments 2008年06月 ポスター発表
  • 中国遼寧省沙海層・阜新層産の前期白亜紀真三錐歯類  [通常講演]
    楠橋 直, 平澤 聡, 胡 耀明, 王 元青
    日本古生物学会2007年年会 2007年06月 口頭発表(一般)
  • 中国遼寧省阜新地域の下部白亜系沙海層・阜新層産多丘歯類  [通常講演]
    楠橋 直, 胡 耀明, 王 元青
    日本古生物学会第156回例会 2007年02月 口頭発表(一般)
  • 遼寧阜新早白亜世多瘤歯獣類化石的研究  [通常講演]
    楠橋 直, 胡 耀明, 王 元青
    中国古脊椎動物学会第十次学術年会 2006年11月 口頭発表(一般)
  • 石川県白山市白峰地域の下部白亜系桑島層 (手取層群) 産多丘歯類の分類と中生代多丘歯類の生物地理的変遷  [通常講演]
    楠橋 直
    日本古生物学会第155回例会 2006年02月 口頭発表(一般)
  • Multituberculate mammals from the upper Lower Cretaceous Fuxin Formation, northeastern China  [通常講演]
    Kusuhashi, N
    IX International Mammalogical Congress 2005年08月 口頭発表(一般)
  • 熊本県の上部白亜系御船層群から産出した真獣類の下顎大臼歯化石  [通常講演]
    楠橋 直, 池上直樹, 松岡廣繁
    日本古生物学会2002年年会 2002年06月 口頭発表(一般)

MISC

  • 村上雅啓, 楠橋 直, 安井謙介 豊橋市自然史博物館研究報告 (28) 27 -36 2018年03月
  • 楠橋 直, 村上雅啓, 安井謙介 豊橋市自然史博物館研究報告 (28) 37 -45 2018年03月
  • 北部ベトナムニンビン省メ地域のソイバン層より産出した上部三畳系カーニアン階の軟体動物化石
    小松俊文, 重田康成, Doan D. Hung, Trinh, T. Ha・Nguyen, B. Hung, Nguyen, T. Minh, 楠橋 直, 對比地孝亘, 前川 匠・Legrand Julien, 真鍋 真 国立科学博物館研究報告 C類(地質学・古生物学) 43 1 -10 2017年12月
  • The first record of the trace fossil Scoyenia gracilis White from Cretaceous non-marine deposits of northwest Vietnam
    Nara, M, Komatsu, T, Kusuhashi, N, Tsuihiji, T, Manabe, M, Nguyen, H. H, Doan, H. D, Nguyen, H. B, Nguyen, M. T Proceedings of the 2nd National Scientific Conference of Vietnam Natural Museum System 216 -222 2016年03月
  • 前期白亜紀の桑島層から見つかる日本最古の哺乳類化石
    楠橋 直, 鍔本武久 桑島化石壁産出化石調査報告書 43 -48 2010年
  • 桑島層から見つかる前期白亜紀のトリティロドン類化石
    松岡廣繁, 楠橋 直 桑島化石壁産出化石調査報告書 37 -42 2010年
  • 前期白亜紀における“カブトガニのポンペイ遺跡”:石川県白山市瀬戸野(下部白亜系手取層群)の Kouphichnium 生痕化石群の概要
    松岡廣繁, 平澤 聡, イングリス マシュー, 寺島容子, 楠橋 直, 長谷川善和 化石研究会会誌 41 62 -75 2009年
  • Haruo Saegusa, Tadahiro Ikeda, Nao Kusuhashi, Satoshi Tanaka, Takashi Matsubara JOURNAL OF VERTEBRATE PALEONTOLOGY 研究発表ペーパー・要旨(国際会議) 28 (3) 135A -135A 2008年09月
  • Myology and osteology of the whooper swan Cygnus cygnus (Aves: Anatidae), Part 2: Muscles of the jaws, tongue and anteriormost neck
    Matsuoka, H, Kurosu, H, Inglis, M.P, Kitagawa, H, Kusuhashi, N, Hasegawa, Y Bulletin of Gunma Museum of Natural History 12 1 -14 2008年
  • Stratigraphy of the late Mesozoic Tetori Group in the Hakusan Region, central Japan: an overview
    Kusuhashi, N, Matsuoka, H, Kamiya, H, Setoguchi, T Memoirs of the Faculty of Science, Kyoto University, Series of Geology and Mineralogy 59 9 -31 2002年
  • A clue to the Neocomian vertebrate fauna: initial results from the Kuwajima "Kaseki-kabe" (Tetori Group) in Shiramine, Ishikawa, central Japan
    Matsuoka, H, Kusuhashi, N, Takada, T, Setoguchi, T Memoirs of the Faculty of Science, Kyoto University, Series of Geology and Mineralogy 59 33 -45 2002年

共同研究・競争的資金等の研究課題

  • 前期白亜紀アジアの哺乳類相変遷の解明: 真獣類の台頭と後期白亜紀型哺乳類相の成立
    日本学術振興会:科学研究費助成事業 基盤研究(C)
    研究期間 : 2020年04月 -2025年03月 
    代表者 : 楠橋 直
  • 日本学術振興会:科学研究費補助金 若手研究(B)
    研究期間 : 2016年 -2019年 
    代表者 : 楠橋 直
  • 日本学術振興会:科学研究費補助金 基盤研究(B)
    研究期間 : 2014年 -2017年 
    代表者 : 高井 正成
  • Dynamique de la biodiversité et climats terrestres au Crétacé inférieur d'Asie de l'Est
    Centre National de la Recherche Scientifique:Projet International de Coopération Scientifique
    研究期間 : 2012年 -2014年 
    代表者 : Romain AMIOT
  • 日本学術振興会:科学研究費補助金 若手研究(B)
    研究期間 : 2012年 -2014年 
    代表者 : 楠橋 直
  • 前期白亜紀哺乳類の古生物地理に関する基礎研究
    愛媛大学:研究活性化事業
    研究期間 : 2010年 -2011年 
    代表者 : 楠橋 直
  • 文部科学省:科学研究費補助金 基盤研究(B)
    研究期間 : 2008年 -2010年 
    代表者 : 三枝 春生, 小林 文夫, 松原 尚志, 田中 里志, 池田 忠広, 楠橋 直, 小林 文夫, 松原 尚志, 渡部 真人, 大橋 智之
     
    兵庫県丹波市および篠山市の下部白亜系篠山層群から豊富な脊椎動物化石群集が発見された。篠山層群は明瞭な乾季と雨季の区別で特徴づけられる気候下に堆積した河川性堆積物であり、その下部層中の氾濫原堆積物に脊椎動物化石は含まれていた。これまでこの氾濫原堆積物は基盤的ティタノサウルス形類の部分骨格を含む7つの分類群に属する恐竜の化石、全身骨格を含む大量の無尾類の化石、有鱗類および真獣類の顎の骨を産出している。
  • 遼寧阜新早白亜世哺乳動物化石的研究
    中国科学院:外籍青年訪問学者奨学金
    研究期間 : 2007年 -2009年 
    代表者 : 楠橋 直
  • 下部白亜系の手取層群から産出する日本最古の哺乳類化石群
    財団法人藤原ナチュラルヒストリー振興財団:学術研究助成金
    研究期間 : 2008年 -2008年 
    代表者 : 鍔本武久

担当経験のある科目

  • 新入生セミナー / 新入生セミナー A愛媛大学理学部
  • 地球科学野外研究愛媛大学理学部
  • 地質調査法実習愛媛大学理学部
  • 基礎地学実験愛媛大学理学部
  • 地層学愛媛大学理学部
  • 地球科学野外実習 II愛媛大学理学部
  • 地球科学野外実習 I愛媛大学理学部
  • 地質学実験 I / 地質学実験愛媛大学理学部
  • 地質学実験 II / 地球科学実験 II愛媛大学理学部
  • 地球環境学特論愛媛大学理学部
  • 地球進化学特論愛媛大学大学院理工学研究科
  • 最新地球惑星科学愛媛大学理学部
  • 地球科学フィールド高等実習 III愛媛大学大学院理工学研究科
  • 地球科学フィールド高等実習 II愛媛大学大学院理工学研究科
  • 地球科学フィールド高等実習 I愛媛大学大学院理工学研究科
  • 地質学特論愛媛大学大学院理工学研究科

愛媛大学教員活動実績

教育活動(B)

担当授業科目(B01)

  • 2019, 前期, 学部, 地球科学野外実習Ⅰ
  • 2019, 前期, 学部, 地質調査法実習
  • 2019, 前期, 学部, 地球科学野外研究
  • 2019, 前期, 学部, 基礎地学実験
  • 2019, 前期, 学部, 基礎地学実験
  • 2019, 前期, 修士, 地質学特論
  • 2019, 前期, 修士, 地球科学フィールド高等実習Ⅰ
  • 2019, 前期, 修士, 地球科学フィールド高等実習Ⅲ
  • 2019, 前期, 修士, 地球科学プレゼンテーション特別実習Ⅰ
  • 2019, 前期, 修士, 地球科学プレゼンテーション特別実習Ⅲ
  • 2019, 前期, 修士, 地球科学ゼミナールⅠ
  • 2019, 前期, 修士, 地球科学ゼミナールⅢ
  • 2019, 前期, 修士, 地球科学プレゼンテーション特別実習Ⅱ
  • 2019, 前期, 修士, 地球科学フィールド高等実習Ⅱ
  • 2019, 前期, 修士, 地球科学高等実験Ⅲ
  • 2019, 前期, 学部, 基礎地学実験
  • 2019, 前期, 学部, 地球科学野外実習I
  • 2019, 前期, 学部, 地質調査法実習
  • 2019, 前期, 学部, 地球科学野外研究


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