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Yoshitsugu Kobayashi
Hokkaido University
AnatomyCretaceousGeologyPaleontologyBiology
64Publications
15H-index
620Citations
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Publications 70
Newest
#1Ryuji Takasaki (Okayama University of Science)
#2Anthony R. Fiorillo (Perot Museum of Nature and Science)H-Index: 20
Last. Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
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Hadrosaurid fossils from the Liscomb Bonebed (Prince Creek Formation, North Slope, Alaska) were the first dinosaur bones discovered from the Arctic. While the Prince Creek Formation hadrosaurids were long identified as Edmontosaurus, a member of the sub-clade Hadrosaurinae, they were recently assigned to a newly-erected taxon, Ugrunaaluk kuukpikensis. However, taxonomic status of the new taxon is ambiguous largely due to the immature nature of the specimens upon which it was based. Here we reexa...
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#1Tomonori Tanaka (University of Hyogo)
#2Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
Last. Haruo Saegusa (University of Hyogo)H-Index: 1
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Abstract Asian hesperornithiforms are extremely rare in contrast to North American records; thus, their diversity in Asia during the Cretaceous is unclear. Maastrichtian hesperornithiform materials have been reported from both fluvial and marine deposits in North America but only from fluvial deposits in Asia. Asian hesperornithiforms from Maastrichtian deposits have been considered as freshwater taxa because of their occurrence from fluvial sediments and their histological features. Here, we re...
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#1Jin-Young Park (SNU: Seoul National University)H-Index: 6
#2Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
Last. Su-Hwan Kim (SNU: Seoul National University)
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Abstract Three new additional skull specimens of Talarurus plicatospineus have been recovered from the Upper Cretaceous (Cenomanian–Santonian) Bayanshiree Formation, of Bayan Shiree cliffs, eastern Gobi Desert, Mongolia. The skulls feature unique characters such as an anteriorly protruded single internarial caputegulum, around 20 flat or concave nasal-area caputegulae surrounded by a wide sulcus, a vertically oriented elongate loreal caputegulum with a pitted surface, an elongate lacrimal capute...
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#1Masaya Iijima (Hefei University of Technology)H-Index: 4
#2Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
4 CitationsSource
#1Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
#2Tomohiro NishimuraH-Index: 11
Last. Kazuhiko SakuraiH-Index: 1
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#1Yuong-Nam Lee (SNU: Seoul National University)H-Index: 14
#2Hang-Jae Lee (Geological Museum)H-Index: 5
Last. Khishigjav Tsogtbaatar (Mongolian Academy of Sciences)H-Index: 12
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Abstract Crocodyliform tracks are reported from the Upper Cretaceous (?Cenomanian-Santonian) Bayanshiree Formation in southeastern Mongolia. Ten tracks are preserved as natural casts, forming a trackway with a quadrupedal gait pattern with a tail trail. All tracks are short and wide, and dominated by toe traces without plantar impressions. Pes tracks are characterized by four deep claw impressions and push-back marks behind them. Manus tracks have shallow claw marks and long, sub-parallel scratc...
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#1Anthony R. FiorilloH-Index: 20
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While there are now numerous records of dinosaurs from Cretaceous rocks around the state of Alaska, very few fossil records of terrestrial vertebrates are known from the Mesozoic rocks of the southwestern part of the state. Here we report the new discovery of extensive occurrences of dinosaur tracks from Aniakchak National Monument of the Alaska Peninsula. These tracks are in the Late Cretaceous (Maastrichtian) Chignik Formation, a cyclic sequence of rocks, approximately 500–600 m thick, represe...
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#1Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
#2Tomohiro NishimuraH-Index: 11
Last. Kazuhiko SakuraiH-Index: 1
view all 9 authors...
A nearly complete skeleton of a new hadrosaurid, Kamuysaurus japonicus gen. et sp. nov., was discovered from the outer shelf deposits of the Upper Cretaceous Hakobuchi Formation of the Yezo Group in Hobetsu area of Mukawa town in Hokkaido, Japan. Kamuysaurus belongs to the sub-clade of Hadrosaurinae, Edmontosaurini, and forms a monophyly with Laiyangosaurus and Kerberosaurus from the northern Far East. Kamuysaurus has a long anterior platform for the nasofrontal sutural surface, which may indica...
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#1Kohei Tanaka (University of Tsukuba)H-Index: 1
#2Yoshitsugu Kobayashi (Hokkaido University)H-Index: 15
Last. Damdinsuren Idersaikhan (Mongolian Academy of Sciences)H-Index: 1
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1 CitationsSource
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