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A Short-Armed Troodontid Dinosaur from the Upper Cretaceous of Inner Mongolia and Its Implications for Troodontid Evolution
A Short-Armed Troodontid Dinosaur Troodontid Evolution
2014/3/26
roodontids are a group of small theropods characterized by
long legs and enlarged braincases [1]. Although phylogenetic
analyses have varied to some extent in their placement of the
Troodontidae, t...
A new Lower Cretaceous bird from China and tooth reduction in early avian evolution
Lower Cretaceous bird evolution beak China
2014/3/26
A new avian genus and species,Zhongjianornis yangi gen. et sp. nov., is reported from the Lower Cretaceous
lacustrine deposits of the Jiufotang Formation in Liaoning, northeast China. The new taxon i...
A new feather type in a nonavian theropod and the early evolution of feathers
Early Cretaceous a nonavian theropod
2014/3/26
All described feathers in nonavian theropods are composite struc-tures formed by multiple filaments. They closely resemble rela-tively advanced stages predicted by developmental models of the
origin ...
An onychodont fish (Osteichthyes, Sarcopterygii) from the Early Devonian of China, and the evolution of the Onychodontiformes
onychodonts evolutio Early Devonian phylogenetic analysis
2014/3/26
Although the superbly preserved specimens of Onychodus jandemarraihave greatly advanced our
understanding of the Onychodontiformes, a primitive sarcopterygian group with large parasymphysial
tooth w...