Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids

Article Abstract:

A new basal tyrannosauroid from the Early Cretaceous Yixian Formation of western Liaoning, China, which is small and gracile and has relatively long arms with three-fingered hands, is reported. Basal tyrannosauroids shows a mosaic of characters, including a derived cranial structure resembling that of derived tyrannosauroids and a primitive postcranial skeleton similar to basal coelurosaurians.

Discovery and exploration, Animals, Fossil, Fossil animals, Tyrannosaurus rex

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A Middle Jurassic 'sphenosuchian' from China and the origin of the crocodylian skull

Article Abstract:

Phylogenetic analysis is used for exhibiting the relationship between the Middle Jurassic Sphenosuchia and the Crocodyliformes including living crocodylians. The studies also showed that the features of the modern crocodylian skull evolved during the phase when the postcranial skeleton was evolving towards greater cursoriality.

Science & research, Research, Cladistic analysis, Crocodiles, Crocodylidae

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