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Article
The dinosaur Sinosauropteryx, thought by some to have given rise to birds, is from the Chinese Jehol biota. A specimen of the dinosaur uniquely shows the opisthotonic process (sharp upward recurvatures of neck and tail) occurring in three stages[...]
Article
Reports of primordial feathers (protofeathers) in dinosaurs have received widespread interest. Recently, it was proposed that a novel protofeather in the theropod dinosaur Beipiaosaurus completes the transitional series in the evolution of the f[...]
Article
The epidermis and dermis are exposed in the tail region of the theropod dinosaur Sinosauropteryx. The specimen under study, like many others of the genus and other air-breathing vertebrates discovered in the Jehol biota, shows strong opisthotonu[...]
Article
A recent development in the identification of feathers in fossils by means of melanosomes was used to suggest that structures observed in an SEM of a filament in the basal theropod dinosaur, Sinosauropteryx, were phaeomelanosomes and that they r[...]
Article
Among the spectacular dinosaur fossils reported from the Jehol Group of northeastern China is the most celebrated, Sinosauropteryx, which continues to excite interest in questions concerning feather origins-most recently with alleged identificat[...]
Article
Millions of years of biological evolution have produced efficient materials and structures that are a source of inspiration to engineers. The paper reviews the overall design principles in the feather rachis and elaborates upon recent functional[...]
Article
Article
Primordial stages in feather evolution including an allegedly new type of protofeather (Xu et al. 2009) as reportedly identified in the Chinese dinosaurs were questioned (Lingham-Soliar in J Ornithol 2009) on identifications based on poor scient[...]
