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A pre-Archaeopteryx troodontid theropod from China with long feathers on the metatarsus
The extensive feathering of this specimen, particularly the attachment of long pennaceous feathers to the pes, sheds new light on the early evolution of feathers and demonstrates the complex distribution of skeletal and integumentary features close to the dinosaur–bird transition.
Early diversification of birds: Evidence from a new opposite bird
The new bird represents a new ecological type different from all known members of Enantiornithes, and shows that enantiornithines had probably originated earlier than the Early Cretaceous, or this group had experienced a rapid radiation right after it first occurred in the early EarlyCretaceous.
A gliding lizard from the Early Cretaceous of China
- Pi-peng Li, K. Gao, L. Hou, X. Xu
- Biology, MedicineProceedings of the National Academy of Sciences
- 27 March 2007
The lizard has a dorsal-rib-supported patagium, a structure independently evolved in the Late Triassic basal lepidosauromorph kuehneosaurs and the extant agamid lizard Draco, revealing a surprising case of convergent evolution among lepidOSauromorphans.
New Early Cretaceous fossil from China documents a novel trophic specialization for Mesozoic birds
The morphology of the skull suggests that Longirostravis had a probing feeding behavior, a specialization previously unknown for Enantiornithes, and provides the first evidence in support of the existence of such a foraging behavior among basal lineages of Mesozoic birds.
Evo-Devo of amniote integuments and appendages.
- Ping Wu, L. Hou, +6 authors C. Chuong
- Biology, MedicineThe International journal of developmental…
In mammals, tilting the balance of the BMP pathway in K14 noggin transgenic mice alters the number, size and phenotypes of different ectodermal organs, making investigators rethink the distinction between morpho-regulation and pathological changes.
A New Enantiornithine Bird from the Lower Cretaceous of Western Liaoning, China
ABSTRACT A new enantiornithine bird, Bohaiornis guoi, gen. et sp. nov., is described in this paper. The holotype, presumably a sub-adult, is a complete, fully articulated skeleton from the Lower…
Diversification in an Early Cretaceous avian genus: evidence from a new species of Confuciusornis from China
- Zihui Zhang, C. Gao, Qingjin Meng, Jinyuan Liu, L. Hou, Guang-mei Zheng
- BiologyJournal of Ornithology
- 3 March 2009
A new species of Confuciusornis, the oldest known beaked bird, is erected based on a nearly complete fossil from the Early Cretaceous Yixian Formation of western Liaoning, northeast China, which suggests an arboreal habit of the new bird.
Early Adaptive Radiation of Birds: Evidence from Fossils from Northeastern China
Late Jurassic and Early Cretaceous birds from northeastern China, including many complete skeletons of Confuciusornis, provide evidence for a fundamental dichotomy in the class Aves that may antedate…
A New Enantiornithine Bird from the Lower Cretaceous of Western Liaoning, China, and Its Implications for Early Avian Evolution
A new enantiornithine bird from the Lower Cretaceous Jiufotang Formation of western Liaoning, China is described, indicating that a carpometacarpal morphology similar to that seen in modern birds probably evolved independently in enantiornsithines and appeared earlier than in Ornithuromorpha, and demonstrates that character evolution in early birds was more complex than previously believed.
A New Sapeornithid Bird from China and Its Implication for Early Avian Evolution
A cladistic analysis shows that Shenshiornis possesses a skull as primitive as or even more primitive than that of Archaeopteryx and hind limbs modified for an improved arboreal capability and cursorial capability significantly weakens at the base of the Pygostylia due to a change in locomotor system.