The first dinosaur tracksite from Xinjiang, NW China (Middle Jurassic Sanjianfang Formation, Turpan Basin) a preliminary report |
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作者姓名: | Oliver WINGS Rico SCHELLHORN Heinrich MALLISON Ben THUY |
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作者单位: | Institute of Geosciences University of Tuebingen D-72076 Tuebingen Germany,Institute of Geosciences University of Tuebingen D-72076 Tuebingen Germany,Museum of Natural History Berlin Humboldt-University of Berlin D-10115 Berlin Germany,Institute of Geosciences University of Tuebingen D-72076 Tuebingen Germany |
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基金项目: | This work was financially supported by a German Research Foundation grant to OW (DFG PF 219/21-2) and field work funds by the Sino-German Science Center Project GZ295. |
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摘 要: | A new dinosaur tracksite was discovered in a steeply inclined sandstone layer of the Middle Jurassic Sanjianfang Formation in the Shanshan area of the Turpan Basin. The site is the first record of dinosaur footprints from Xinjiang Province in northwestern China. More than 150 tridactyl theropod dinosaur footprints are preserved as positive hyporeliefs on the lower bedding plane of a fine-grained sandstone body. Most of the footprints are isolated and appear to be randomly distributed. Some show well defined phalangeal pads, heels and rarely indistinct impressions of the distal part of the metatarsus. Two distinct morphotypes are present: a larger type with relatively broad pads shows similarities to Changpeipus and Megalosauripus, and a slightly smaller, slender and gracile type which is similar to Grallator, Eubrontes and Anchisauripus. In both morphotypes, digit III is the longest with a length between 11.4 and 33.6 cm. A single imprint shows prominent scratches, probably formed during slipping of the track maker.
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关 键 词: | 兽足亚目 恐龙 足迹 侏罗纪 |
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