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A new ichthyodectiform (Pisces, Teleostei) from the Lower Cretaceous of South Korea and its paleobiogeographic implication
Kim, Haang-Mook1; Chang, Mee-Mann2; Wu, Feixiang2; Kim, Yang-Hee1; Chang, MM (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China.
2014
发表期刊CRETACEOUS RESEARCH
ISSN0195-6671
卷号47期号:0页码:117-130
文章类型Article
摘要Here we report the first ichthyodectiform in the Jinju Biota from the Lower Cretaceous Jinju Formation, Shindong Group, at Hyojagyo, Jinju City, South Korea. It shows the following ichthyodectiform characters: 1) jaw teeth in single series; 2) coracoid expanded ventrally; 3) dorsal fin situated posteriorly, with its origin opposite to that of long anal fin. Besides, its caudal skeleton also exhibits certain features often seen in basal ichthyodectiforms and some other primitive teleosts. The fish is noticeably similar to the species referred to Chuhsiungichthys from the upper Lower Cretaceous Dobaru and Kumagai formations of the Wakino Subgroup of Kanmon Group in Kyushu, Japan, and Chuhsiungichthys tsanglingensis from the Jiangdihe Formation of similar age from Chuxiong, Yunnah Province, China. Chuhsiungichthys was, in turn, comparable with Mesoclupea showchangensis from the upper Lower Cretaceous Shouchang Formation in Shouchang and Linhai, and Guantou Formation in Zhuji, Zhejiang Province, China. The latter two genera also show the ichthyodectiform characters mentioned above. Nevertheless, the fish from Korea, those referred to Chuhsiungichthys from Japan and China, and Mesoclupea can easily be distinguished from other ichthyodectiforms in their higher body depth and shorter length; proportionally longer head; longer dorsal and anal fins; lower number of vertebrae, with abdominal less than caudal; vertebrae deeper than long. Among them the Jinju fish is distinct from the other two genera in even higher and shorter body, and presence of urodermal. In addition, the Jinju fish is different from Mesoclupea showchangensis in having a much longer dorsal fin and lower number of vertebrae, but different from Chuhsiungichthys tsanglingensis in having a much higher number of vertebrae and more ridges and grooves on the lateral face of vertebrae. Thus, the Jinju fish cannot be referred to either Chuhsiungichthys or Mesoclupea, and establishing a new genus and species for it is warranted. The Asian ichthyodectiforms, Mesoclupea, Chuhsiungichthys, and Jinjuichthys, may most probably form a monophyletic group Chuhsiungichthyidae, known so far restricted to the upper Lower Cretaceous fresh and/or brackish waters of East Asia. The new ichthyodectiform materials from Korea are better preserved than those from Japan, thereby allowing a relatively complete description of the fish, providing more information for discussion of its phylogenetic position, enriching the diversity of the local fish fauna, and helping us better understand the paleobiogeographical distribution of the group and its geological background. (C) 2013 Elsevier Ltd. All rights reserved.
关键词Jinjuichthys Ichthyodectiformes Late Early Cretaceous South Korea Cosmopolitan Fishes Indicating West Pacific Rising
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
关键词[WOS]FISHES ; CHINA ; CHIROCENTRITES ; ACTINOPTERYGII ; PHYLOGENY ; MEXICO ; AGE
收录类别SCI
语种英语
项目资助者Society of Natural History and Future Environments, Republic of Korea; National Basic Research Program of China [2012CB821900]
WOS研究方向Geology ; Paleontology
WOS类目Geology ; Paleontology
WOS记录号WOS:000329960100011
引用统计
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/5200
专题古低等脊椎动物研究室
通讯作者Chang, MM (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China.
作者单位1.Pusan Natl Univ, Dept Environm Geol, Coll Sci, Pusan 609735, South Korea
2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
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Kim, Haang-Mook,Chang, Mee-Mann,Wu, Feixiang,et al. A new ichthyodectiform (Pisces, Teleostei) from the Lower Cretaceous of South Korea and its paleobiogeographic implication[J]. CRETACEOUS RESEARCH,2014,47(0):117-130.
APA Kim, Haang-Mook,Chang, Mee-Mann,Wu, Feixiang,Kim, Yang-Hee,&Chang, MM .(2014).A new ichthyodectiform (Pisces, Teleostei) from the Lower Cretaceous of South Korea and its paleobiogeographic implication.CRETACEOUS RESEARCH,47(0),117-130.
MLA Kim, Haang-Mook,et al."A new ichthyodectiform (Pisces, Teleostei) from the Lower Cretaceous of South Korea and its paleobiogeographic implication".CRETACEOUS RESEARCH 47.0(2014):117-130.
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