| A new Early Cretaceous lizard with well-preserved scale impressions from western Liaoning, China |
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| 作者姓名： | JI Shu'an |
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| 作者单位： | School of Earth and Space Sciences,Peking University,Beijing 100871,China |
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| 基金项目： | 国家自然科学基金，中国博士后科学基金，the Fund for Young Geologist of former Ministry of Geology and Mineral Resources |
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| 摘 要： | A new small lizard, Liaoningolacerta brevirostra gen. et sp. nov., from the Early Cretaceous Yixian Formation of western Liaoning is described in detail. The new specimen was preserved not only by the skeleton, but also by the exceptionally clear scale impressions. This lizard can be included within the taxon Scleroglossa based on its 26 or more presacrals, cruciform interclavicle with a large anterior process, moderately elongated pubis, and slightly notched distal end of tibia. The scales vary evidently in size and shape at different parts of body: small and rhomboid ventral scales, tiny and round limb scales, and large and longitudinally rectangular caudal scales that constitute the caudal whorls. This new finding provides us with more information on the lepidosis of the Mesozoic lizards.
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| 关 键 词： | new genus Squamata skeleton lepidosis Early Cretaceous western Liaoning |
A new Early Cretaceous lizard with well-preserved scale impressions from western Liaoning, China |
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| JI Shu''an.A new Early Cretaceous lizard with well-preserved scale impressions from western Liaoning, China[J].Progress in Natural Science,2005,15(2):162-168. |
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| Authors: | JI Shu'an |
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| Institution: | School of Earth and Space Sciences,Peking University,Beijing 100871,China |
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| Abstract: | A new small lizard, Liaoningolacerta brevirostra gen. et sp. nov., from the Early Cretaceous Yixian Formation of western Liaoning is described in detail. The new specimen was preserved not only by the skeleton, but also by the exceptionally clear scale impressions. This lizard can be included within the taxon Scleroglossa based on its 26 or more presacrals, cruciform interclavicle with a large anterior process, moderately elongated pubis, and slightly notched distal end of tibia. The scales vary evidently in size and shape at different parts of body: small and rhomboid ventral scales, tiny and round limb scales, and large and longitudinally rectangular caudal scales that constitute the caudal whorls. This new finding provides us with more information on the lepidosis of the Mesozoic lizards. |
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| Keywords: | new genus Squamata skeleton lepidosis Early Cretaceous western Liaoning |
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