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meaning: "fan tailed bird"
Named By: J. K. O'Connor, X. Wang, L. M. Chiappe, C. Gao, Q. Meng, X. Cheng & J. Liu in 2009
Time Period: Early Cretaceous, 122 Ma
Location: China, Liaoning Province - Yixian Formation (Dawangzhanhgzi Member)
Size: Unavailable
Diet: Insectivore
Fossil(s): Partial remains of an individual preserved flat on a slab
Classification: | Chordata | Dinosauria | Saurischia | Theropoda | Enantiornithes | Longipterygidae |

Shanweiniao is a genus of long-snouted enantiornithine birds from Early Cretaceous China. One species is known, Shanweiniao cooperorum. There is one known fossil, a slab and counterslab. The fossil is in the collection of the Dalian Natural History Museum, and has accession number DNHM D1878/1 and DNHM1878/2. It was collected from the Lower Cretaceous Dawangzhngzi Bed, middle Yixian Formation, from Lingyuan in the Liaoning Province, China.

O'Connor et al. (2010) found that Shanweiniao is a close relative of Longipteryx, Longirostravis, and Rapaxavis, which together form a clade of long-beaked enantiornithine birds.

The genus name Shanweiniao means "fan-tailed bird" in Chinese. The authors report that Shanweiniao is the only known enantiornithine bird with a tail surface capable of generating lift, as in modern birds. They also report that only one other Mesozoic bird, Yixianornis grabaui, which is a basal ornithurine, has been reported with this fan - shaped tail feather morphology.

The species name, cooperorum, is after Carl and Lynn Cooper who donated funds to support the study of Mesozoic birds in China.

Read more about Shanweiniao at Wikipedia
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