中国恐龙足迹类群

The Footprint Groups of Chinese Dinosaurs

对在中国发现的恐龙足迹化石从产地与层位上进行了分类比较 ,并较为系统地将它们按产地和层位划分出不同的类群 ;同时 ,对形成恐龙足迹的古生态、古环境作了进一步的探讨。本文将中国恐龙足迹归结为如下类群 :①晚三叠世恐龙足迹类群 (DinosaurFootprintGroupofLateTriassicEpoch) ;②早侏罗世恐龙足迹类群 (DinosaurFootprintGroupofEarlyJurassicEpoch) ;③中侏罗世恐龙足迹类群 (DinosaurFootprintGroupofMiddleJurassicEpoch) ;④晚侏罗世恐龙足迹类群 (DinosaurFootprintGroupofLateJurassicEpoch) ;⑤早白垩世恐龙足迹类群 (DinosaurFootprintGroupofEarlyCretaceousEpoch) ;⑥晚白垩世恐龙足迹类群 (DinosaurFootptintGroupofLateCre taceousEpoch)。

Since the first discovery of dinosaur fo otprints in Shengmu County, Shanxi Province in 1929, 30 genera and 38 species have been named in China. Among them, ther e are some very rare and precious ones, such as the small dinosaur'footprints measured more than two centimiters, the two digits prints falling into Ichnofamily Dromaeosauridae, some birds' footprints unearthed from the sam e sediments of the dinosaur footprints etc. In Chaoyang County, Liaoning Prov ince, over 4 000 dinosaur footprints were found. According to the large quantit ies of dinosaur footprints discovered in China and their sediments, this pa per classifies the findings into six groups: they are Dinosaur Footprint Group of Late Triassic Epoch ; the Dinosaur Footprint Group of Early Jurassic Epoch ; the Dinosaur Footprint Group of Middle Jurassic Epoch ; the Dinosaur Footprint Group of Late Jurassic Epoch ; the Dinosaur Footprint Group of Early Cretaceou s Epoch and the Dinosaur Footptint Group of Late Cretaceous Epoch . Nowadays, the dinosaur footprints have played an important role in the research of dinosaur biology. This paper also gives a preliminary discussio n on the dinosaurs' ecology and their living environment from their footprints and puts forward a viewpoint : the carnivorous dinosaurs did not kill her bi vorous dinosaurs. The carnivorous dinosaur's food was fishes, turtles , shells a nd some small reptiles , which lived in rivers , lakes , lower and humid place s etc.