雙語新聞：中國最南端發(fā)現(xiàn)暴龍科恐龍牙齒化石

中國的一個研究小組最近確定，在中國南方廣東省三水盆地發(fā)現(xiàn)的四顆大型恐龍牙齒與霸王龍屬于同一類食肉兩足恐龍。
 

This finding was published in the international geological journal Cretaceous Research on Thursday.

這一發(fā)現(xiàn)于周四發(fā)表在國際地質(zhì)雜志《白堊紀研究》上。
 

Xing Lida, an associate professor at China University of Geosciences Beijing, who led the research, said the fossilized teeth found in the cities of Sihui and Guangzhou date back to the end of the Late Cretaceous period, approximately 66 to 70 million years ago.

領(lǐng)導(dǎo)這項研究的中國地質(zhì)大學副教授邢立達說，在四會和廣州發(fā)現(xiàn)的牙齒化石可以追溯到白堊紀晚期，大約6600萬至7000萬年前。
 

South China lacks evidence of large theropod dinosaurs from the Late Cretaceous, with the teeth found in the basin marking the first discovery of large theropod dinosaurs in the area and one of the southernmost fossil records of the Tyrannosauroidea in China.

華南地區(qū)缺乏白堊紀晚期大型獸腳亞目恐龍的證據(jù)，在該盆地發(fā)現(xiàn)的牙齒標志著該地區(qū)首次發(fā)現(xiàn)大型獸腳類恐龍，也是中國最南端的暴龍科化石記錄之一。
 

He said dinosaur egg fossils from the Late Cretaceous period discovered in the basin also indicate that dinosaurs belonging to groups including the Troodontidae, Oviraptorosauria and Hadrosauridae lived in the region.

他說，在該盆地發(fā)現(xiàn)的白堊紀晚期恐龍蛋化石也表明，屬于傷齒龍科、偷蛋龍下目和鴨嘴龍類等恐龍群的恐龍生活在該地區(qū)。
 

Xing said theropod dinosaur teeth typically have a banana or crescent shape, wider in the middle and narrower toward the edges. The three relatively intact teeth found in Sihui each exceed 6 centimeters in crown length, while tooth fragments were found in Guangzhou.

邢說，獸腳類恐龍的牙齒通常呈香蕉形或新月形，中間較寬，邊緣較窄。在四會發(fā)現(xiàn)的三顆相對完整的牙齒牙冠長度均超過6厘米，而在廣州發(fā)現(xiàn)的牙齒碎片。
 

The research team, with members from China University of Geosciences Beijing, the Sihui City Museum, Sun Yat-sen University and the Guangdong-Hong Kong-Macau Institute of Earth Sciences, analyzed 145 features from 97 theropod species, with the results supporting the classification of the four teeth as belonging to the Tyrannosauroidea.
該研究小組由北京中國地質(zhì)大學、四會市博物館、中山大學和廣東-香港-馬考地球科學研究所的成員組成，分析了97種獸腳亞目恐龍的145個特征，結(jié)果支持將這四顆牙齒歸類為暴龍科。