A probable tyrannosaurid track from the Upper Cretaceous of southern China

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（16）
• 页码范围: 1136-1139
• 页数: 4页
• 语种: 英文

摘要

A large number of Upper Cretaceous (Maastrichtian) dinosaur skeletal fossils have been found in the Nanxiong Basin and adjacent Ganzhou area,including those of theropods,sauropods and hadrosaurids.However,known dinosaur ichnoassemblages from the Nanxiong Basin partly indicate a different fauna,with dominating large-and medium-sized ornithopods,theropods,and pterosaurs [1,2].This is one of many known examples where trace and body fossil assemblages from the same formation or geologically discrete region show a different composition.Palecological and paleobiogeographical analyses therefore should consider data from both,before any conclusions can be drawn.Formations can be classified according to the relative degree of similarity or congruity (or difference/incongruity) between trace and body fossils into the 5 categories proposed by Lockley [3].Type 1 contains only tracks,and Type 5 only body fossils.Intermediate categories 2-4 are tracks ＞ bones,tracks =bones,and tracks ＜ bones,where ichnofossils dominate,are equal or minor in abundance relative to the bone record.