Jiufotang Formation

Microraptor (Greek, μικρός, mīkros: "small"; Latin, raptor: "one who seizes") is a genus of small, four-winged dromaeosaurid dinosaurs. Numerous well-preserved fossil specimens have been recovered from Liaoning, China. They date from the early Cretaceous Jiufotang Formation (Aptian stage), 125 to 120 million years ago. Three species have been named (M. zhaoianus, M. gui, and M. hanqingi), though further study has suggested that all of them represent variation in a single species, which is properly called M. zhaoianus. Cryptovolans, initially described as another four-winged dinosaur, is u

Psittacosaurus ( ; "parrot lizard") is a genus of extinct ceratopsian dinosaur from the Early Cretaceous of what is now Asia, existing between 125 and 105 million years ago. It is notable for being the most species-rich non-avian dinosaur genus. Up to 13 species are known, from across China, Mongolia, Russia, and Thailand. The species of Psittacosaurus were obligate bipeds at adulthood, with a high skull and a robust beak. One individual was found preserved with long filaments on the tail, similar to those of Tianyulong. Psittacosaurus probably had complex behaviours, based on the proportions

Jeholornis (meaning "Jehol bird") is a genus of avialan dinosaurs that lived between approximately 122 and 120 million years ago during the early Cretaceous Period in China. Fossil Jeholornis were first discovered in the Jiufotang Formation in Hebei Province, China (in what was previously Rehe Province, also known as Jehol—hence the name) and additional specimens have been found in the older Yixian Formation.

Sinotyrannus (meaning "Chinese tyrant") is an extinct genus of large tyrannosauroid theropod dinosaurs known from the Early Cretaceous Jiufotang Formation of Liaoning, China. This genus contains a single species, Sinotyrannus kazuoensis, known from a single mature specimen including a partial skull, some vertebrae, and part of the pelvic girdle.

Liaoningosaurus (meaning "Liaoning lizard") is an unusual genus of basal ankylosaurid dinosaur from the Liaoning Province, China that lived during the Early Cretaceous (late Barremian to early Aptian stages, ~125.4 to 118.9 Ma) in what is now the Yixian and Jiufotang Formation. The type and only species, Liaoningosaurus paradoxus, is known from more than 20 specimens, represented by juvenile individuals. It was named in 2001 by Xu, Wang and You.

Yanornis () is an extinct genus of fish-eating Early Cretaceous birds. Two species have been described, both from Liaoning province, China: Yanornis martini, based on several fossils found in the 120-million-year-old Jiufotang Formation at Chaoyang, and Yanornis guozhangi, from the 124-million-year-old Yixian Formation.

Similicaudipteryx, meaning "similar to Caudipteryx" (which itself means "tail feather"), is a genus of theropod dinosaur of the family Caudipteridae.

Sapeornis is a monotypic genus of avialan dinosaurs which lived during the early Cretaceous period (late Barremian to early Aptian, roughly 125-120 mya). Sapeornis contains only one species, Sapeornis chaoyangensis.

Dalianraptor (meaning "Dalian thief") is a dubious, possibly chimeric, genus of theropod dinosaurs from the Jiufotang Formation of China, dating to the Early Cretaceous. It was initially believed to have been a possible dromaeosaurid before it was described in 2005.

Chuanqilong (meaning "legendary dragon") is a monospecific genus of basal ankylosaurid dinosaur from the Liaoning Province, China that lived during the Early Cretaceous (late Barremian to Aptian stage, 122.0 to 118.9 Ma) in what is now the Jiufotang Formation. The type and only species, Chuanqilong chaoyangensis, is known from a nearly complete skeleton with a skull of a juvenile individual. It was described in 2014 by Fenglu Han, Wenjie Zheng, Dongyu Hu, Xing Xu, and Paul M. Barrett. Chuanqilong shows many similarities with Liaoningosaurus and may represent a later ontogenetic stage of the ta

geological formation in Liaoning, China

extinct species of reptile

Jianchangornis a genus of basal ornithuromorph dinosaurs. Fossils were recovered from the Jiufotang Formation at Liaoning, China.

thumb|Reconstructed skull Bohaiornis is a genus of enantiornithean dinosaurs. Fossils have been found from the Lower Cretaceous Jiufotang Formation of western Liaoning, China. The only known species, Bohaiornis guoi, was named by Dongyu Hu, Li Li, Lianhaim Hou and Xing Xu in 2011 on the basis of a fully articulated and well-preserved skeleton of a sub-adult. This specimen, LPM (Liaoning Paleontological Museum) B00167, preserved two long, ribbon-like feathers attached to the tail rather than a fan of shorter pennaceous feathers. It was similar to the slightly older Eoenantiornis, but much large

Cratonavis (meaning "Craton bird") is an extinct genus of pygostylian avialian from the Early Cretaceous Jiufotang Formation of Liaoning Province, China. The genus contains a single species, C. zhui, known from a complete skeleton.

Zhongjianornis is a genus of beaked, pigeon-sized birds from the early Cretaceous period of China. It is known from one fossil found at Jianchang, Liaoning Province, in rocks of the Jiufotang Formation, representing the type species Zhongjianornis yangi.

Yixianornis (meaning "Yixian Formation bird") is a bird genus from the early Cretaceous period. Its remains have been found in the Jiufotang Formation at Chaoyang (People's Republic of China) dated to the early Aptian age, around 120 million years ago. Only one species, Yixianornis grabaui, is known at present. The specific name, grabaui, is named after American paleontologist Amadeus William Grabau, who surveyed China in the early 20th century.

Parabohaiornis is an extinct genus of bohaiornithid enantiornithean dinosaur known from the Early Cretaceous of Liaoning Province, northeastern China. It contains a single species, Parabohaiornis martini.

Chongmingia is a genus of basal avialan belonging to Pygostylia that lived during the Aptian. It was found in the Jiufotang Formation in Chaoyang, China, and was described by Wang et al., 2016. The name comes from the word Chongming, referring to a Chinese mythological bird, and the specific epithet is in honor of Mr. Xiaoting Zheng.

Kompsornis (meaning "elegant bird") is an extinct genus of avialan dinosaurs that lived during the Early Cretaceous period of China. The type and only known species is Kompsornis longicaudus; the specific name means "long-tailed". It is known from only a single fossil specimen from the Jiufotang Formation. Kompsornis was closely related to the well-known Jeholornis, another long-tailed avialan from China, but differs from it in features of its skeleton, particularly the fusion and growth rate of its bones. Like other jeholornithiforms, Kompsornis was a long-tailed avialan with long wings and p

Longusunguis is an extinct genus of bohaiornithid enantiornithean dinosaur known from the Early Cretaceous of Liaoning Province, northeastern China. It contains a single species, Longusunguis kurochkini.

upright|thumb|left|Referred specimen

Schizooura is a genus under the classification of basal ornithuromorph dinosaurs, which are dinosaurs that are relatives of modern birds. This feathery creature was from the Early Cretaceous period (125.5 million years ago) in modern-day western Liaoning, China The Schizooura was a ground forager, meaning it collected whatever it could find from the floor. The bird evolved differently compared to other modern birds, as its beak is toothless. The remains were discovered in Jiufotang Formation deposits. Any information about the bird is relatively unknown, as only one fossil was ever discovered.

Songlingornis is an extinct genus of ornithuromorph dinosaurs from the Early Cretaceous. Its fossils have been found in the Jiufotang Formation of Liaoning (PRC). The age of these rocks is somewhat disputed, but probably around the early Aptian, 125-120 million years ago. Only one species, Songlingornis linghensis, is known at present.

Piscivoravis is an extinct genus of fish-eating ornithuromorph dinosaurs known from the Early Cretaceous Jiufotang Formation (Aptian age) of western Liaoning Province, northeastern China. Piscivoravis was first named by Shuang Zhou, Zhonghe Zhou and Jingmai O'Connor in 2013 and the type species is Piscivoravis lii. Phylogenetic analysis places Piscivoravis in a more derived position than Archaeorhynchus, in a polytomy with Jianchangornis, Patagopteryx, and the clade including all more derived ornithuromorphs.

Chaoyangia is an extinct genus of euornithean birds, containing the single species Chaoyangia beishanensis. This species is known from a single fossil specimen consisting of a partial skeleton including vertebra, ribs, hips, and upper legs. The specimen (museum catalog number IVPP V9934) was discovered in the Jiufotang Formation near the city of Chaoyang in Liaoning province, China. This rock formation has been dated to the Aptian age of the Early Cretaceous period, 120 million years ago.

Bellulornis ("beautiful bird") is an extinct genus of ornithuromorph avialan. It is known from a complete postcranial skeleton lacking the skull which was unearthed from the rocks of the Early Cretaceous-aged Jiufotang Formation in Liaoning Province, China. It was originally given the genus name Bellulia, meaning "beautiful", in reference to the fact that the skeleton was preserved in a pose reminiscent of a dancer. However, it was discovered after publication that the genus Bellulia was preoccupied by an extant moth. The authors then amended the name to Bellulornis, adding the Ancient Greek s

Iteravis () is an extinct genus of ornithuromorph bird known from the Early Cretaceous Jiufotang Formation of what is today the Liaoning Province of China. The genus contains a single species, Iteravis huchzermeyeri, named in honor of the archosaur palaeontologist Dr. Fritz Huchzermeyer, who died shortly before Iteravis was described. The relationships between Iteravis and species of Gansus have been debated, with some researchers arguing for a synonymy between the former and G. zheni, and others recovering a closer relationship between the two genera within the family Gansuidae.

Omnivoropteryx (meaning "omnivorous wing") is a genus of primitive flying avialan from the early Cretaceous Upper Jiufotang Formation of China. The authors who described Omnivoropteryx, Stephen Czerkas and Qiang Ji, stated that their specimen closely resembles Sapeornis, but the pubis was longer and, since no skull was known for Sapeornis, they did not consider the two names synonyms. The later discovery of Sapeornis skulls shows that they were indeed similar to Omnivoropteryx. This may make Omnivoropteryx a junior synonym of Sapeornis, and the name may be abandoned.