| A new species of Gobiconodon （Triconodonta, Mammalia） and its implication for the age of Jehol Biota |
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| 作者姓名： | LIChuankui WANGYuanqing HUYaoming MENGJin |
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| 作者单位： | [1]InstituteofVertebratePaleontologyandPaleoanthropology,ChineseAcademyofSciences,Beijing100044,China; [2]AmericanMuseumofNaturalHistory,NewYork,NY10024,USA;. [3]BiologyProgram（Ecology,EvolutionaryBiology,andBehavior）,GraduateSchoolandCityCollege,CityUniversityofNewYork,NY10016,USA |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金，中国科学院资助项目 |
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| 摘 要： | A new species of Gobiconodon is found from the Yixian Formation of western Liaonlng, China. The new taxa,G zofiae sp. nov., has a confluent opening for branches Ⅱand Ⅲ of the trigeminal nerve on the anterior lamina of the petrosal. G zofiae sp. nov. is similar to Repenomamus in having an ossified Meckel‘s cartilage connecting the lower jaws and ear region. The new species, with enlarged I^1/I1, posteriorly located infraorbital foramen and four mental foramina,distinctly differs from the other species of Gobiconodon. The new material indicates that Gobiconodon has four, not five,upper molariforms. The presence of Gobiconodon in Jchol Biota makes it possible to correlate Jehol Biota with faunas in eastern Asia and North America, and suggests the age of the Yixian Formation to be Early Cretaceous.
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| 关 键 词： | 辽宁 白垩纪 骨化石 中生代 哺乳动物 头盖骨 |
| 收稿时间： | 2002-09-18 |
A new species ofGobiconodon (Triconodonta, Mammalia) and its implication for the age of Jehol Biota |
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| LIChuankui WANGYuanqing HUYaoming MENGJin.A new species ofGobiconodon (Triconodonta, Mammalia) and its implication for the age of Jehol Biota[J].Chinese Science Bulletin,2003,48(11):1129-1134. |
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| Authors: | Chuankui Li Yuanqing Wang Yaoming Hu Jin Meng |
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| Institution: | LI Chuankui1, WANG Yuanqing1, HU Yaoming1,2,3 & MENG Jin2 1. Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China; 2. American Museum of Natural History, New York, NY 10024, USA; 3. Biology Program (Ecology, Evolutionary Biology, and Behavior), Graduate School and City College, City University of New York, NY 10016, USA |
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| Abstract: | A new species of Gobiconodon is found from the Yixian Formation of western Liaoning, China. The new taxa, G. zofiae sp. nov., has a confluent opening for branches Ⅱ and Ⅲ of the trigeminal nerve on the anterior lamina of the petrosal. G. zofiae sp. nov. is similar to Repenomamus in having an ossified Meckel's cartilage connecting the lower jaws and ear region. The new species, with enlarged I1/I1, posteriorly located infraorbital foramen and four mental foramina, distinctly differs from the other species of Gobiconodon. The new material indicates that Gobiconodon has four, not five, upper molariforms. The presence of Gobiconodon in Jehol Biota makes it possible to correlate Jehol Biota with faunas in eastern Asia and North America, and suggests the age of the Yixian Formation to be Early Cretaceous. |
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| Keywords: | Jehol Biota Triconodont Gobiconodon cranium Early Cretaceous |
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