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 兽脚亚目（Theropod）
兽脚亚目（Theropod） 是一群蜥蜴状髋部的恐龙。 兽脚亚目属于蜥龙类，当中全都是肉食性的两足动物，包括从体型小的虚形龙，到体型大的暴龙。
Siamotyrannus 是在泰国发现的一种蜥龙类，肉食两脚动物。下面有一些英文说明资料：Siamotyrannus isanensis
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The only reason that I have for placing Siamotyrannus in the Shanshanosaurinae is that it is of greater age than other tyrannosaurids. There is no guarantee that it actually was a tyrannosaurid. The remains of this dinosaur are based on a single pelvis and caudal series, so many diagnostic characteristics are absent.
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Statistics：
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名称：Siamotyrannus isanensis
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长6米，重一吨：6 m (18 feet) long, 1 tonne (1 ton)
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白垩纪早期：Early Cretaceaous
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Known from only one very incomplete skeleton.
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Found in Thailand.
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The name means "Siam (Thailand) tyrant from Isan".
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Named By: Buffetaut, E., Suteethorn, V., and Tong,H.Y. (1996) "The earliest known tyrannosaur from the Lower Cretaceous of Thailand".
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Nature #381 (6584): 689-91.
图片：
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蜥脚类的牙齿化石[Tooth of sauropod(Phuwiangosaurus?)] Phuwiangosaurus是在泰国发现的一种蜥脚类，草食动物。下面有一些英文说明资料：
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NAME： PHUWIANGOSAURUS
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DESCRIBER： Martin, Buffetaut & Suteethorn,1994
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TIME： Jurassic Late Cretaceous Early Tithonian Berriasian
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CLASSIFICATION： Saurischia Sauropodomorpha Sauropoda ?Camarasauridae
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DIET： Herbivore
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FOSSILSITE： Thailand
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TYPE SPECIES： PHUWIANGOSAURUS sirindhornae
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LENGTH： 15--20 meter
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INFO： Phuwiangosaurus > P.sirindhornae
A pertly articulated skeleton. This genus is verry different from the Late Jurassic Chinese sauropods. Abundant juvinile remains attributed to P.sirindhornae provide some data on the hitherto poorly known sauropod babies.The taxon is based on a partly articulated skeleton, which consists of three cervical vertebrae , four dorsal vertebrae, several ribs, the left scapula and the distal and of the right one, the left humerus and part of the left ulna, bot sides of the pelvis both femora and the left fibula.
图片：牙齿化石
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