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.
Hongshanornithidae is an extinct group of early ornithuromorph birds from the early Cretaceous period of China. It includes the genera Hongshanornis and Tianyuornis from the Yixian Formation of Inner Mongolia, Longicrusavis from the Yixian Formation of Liaoning Province, Parahongshanornis from the Jiufotang Formation of Liaoning Province, and Archaeornithura, the oldest known member, from the Huajiying Formation of Hebei Province.
Songlingornithidae is a family of basal euornithean dinosaurs from the Early Cretaceous of China. All known specimens come from the Jiufotang Formation and the Yixian Formation, dating to the early Barremian and Aptian ages, 125–120 million years ago.
Yanornithiformes is an order of ornithuromorph dinosaurs from the early Cretaceous Period of China. All known specimens come from the Yixian Formation and Jiufotang Formation, dating to the early Aptian age, 124.6 to 120 million years ago.
Schizooura is a genus of basal ornithuromorph dinosaurs known from the Early Cretaceous of Jianchang, western Liaoning, China. Its remains were discovered in Jiufotang Formation deposits, dated to 120 million years ago.
Piscivoravis is an extinct genus of fish-eating ornithuromorphs known from the Early Cretaceous Jiufotang Formation 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.
Yumenornis is an extinct genus of basal ornithuromorph dinosaurs known from the Early Cretaceous Xiagou Formation of Changma Basin, Gansu Province of northwestern China. Yumenornis was first named by Ya-Ming Wang, Jingmai O'Connor, Da-Qing Li and Hai-Lu You in 2013 and the type species is Yumenornis huangi.
Changmaornis is an extinct genus of basal ornithuromorph dinosaur known from the Early Cretaceous Xiagou Formation of Changma Basin, Gansu Province of northwestern China. Changmaornis was first named by Ya-Ming Wang, Jingmai K. O'Connor, Da-Qing Li and Hai-Lu You in 2013 and the type species is Changmaornis houi.
Jiuquanornis is an extinct genus of basal ornithuromorph dinosaur known from the Early Cretaceous Xiagou Formation of Changma Basin, Gansu Province of northwestern China. Jiuquanornis was first named by Ya-Ming Wang, Jingmai K. O'Connor, Da-Qing Li and Hai-Lu You in 2013 and the type species is Jiuquanornis niui.
Archaeornithura is an extinct genus of ornithuromorphs from the early Cretaceous period. It is known from two fossil specimens of a single species, Archaeornithura meemannae. The specimens have been dated to the Hauterivian age, 130.7 million years ago, making A. meemannae the oldest known ornithuromorph, the lineage that gave rise to modern birds, and contains all living birds as well as many of their extinct relatives.
Juehuaornis is an extinct genus of ornithuromorph dinosaurs from the Early Cretaceous of present-day China. It contains a single species, J. zhangi.
Dingavis is an extinct genus of ornithuromorph dinosaurs from the Early Cretaceous of present-day China. It contains a single species, D. longimaxilla.
Cruralispennia is an extinct genus of enantiornithean bird. The only known specimen of Cruralispennia was discovered in the Early Cretaceous Huajiying Formation of China and formally described in 2017. The type species of Cruralispennia is Cruralispennia multidonta. The generic name is Latin for "shin feather", while the specific name means "many-toothed". The holotype of Cruralispennia is IVPP 21711, a semi-articulated partial skeleton surrounded by the remains of carbonized feathers.
Eogranivora is a bird genus, belonging to the Ornithuromorpha, that lived in the area of present-day China during the Early Cretaceous. Its type species is Eogranivora edentulata.
Khinganornis is a genus of ornithuromorph dinosaurs from the Early Cretaceous Longjiang Formation of Liaoning, China. The genus contains a single species, Khinganornis hulunbuirensis, known from a nearly complete fossil preserved on a slab and counter slab. The holotype most likely represents an adult individual.
Abitusavis is an extinct genus of ornithuromorph dinosaurs from the Early Cretaceous Yixian Formation of China. The genus contains a single species, Abitusavis lii, known from a nearly complete skeleton.
Mengciusornis is an extinct genus of basal ornithuromorph dinosaurs from the Early Cretaceous of China. It contains one species, M. dentatus, remains of which have been found in the Jiufotang Formation. Together with the closely related Schizooura it makes up the family Schizoouridae.
Kaririavis is an extinct genus of ornithuromorph dinosaurs from the Early Cretaceous Crato Formation of Brazil. It contains one species, K. mater. It is known only from its holotype, which consists of a single foot. Kaririavis is the oldest known ornithuromorph from Gondwana.
Meemannavis is a genus of ornithuromorph dinosaurs from the Early Cretaceous (Aptian) Xiagou Formation of Gansu Province, China. The genus contains a single species, Meemannavis ductrix, known from a partial skeleton including an incomplete skull and cervical and thoracic vertebrae. The lower jaw and tip of the upper jaw of the Meemannavis holotype are toothless, but it may have had teeth nearer the back of the upper jaw.
Brevidentavis is a genus of ornithuromorph dinosaurs from the Early Cretaceous (Aptian) Xiagou Formation of Gansu Province, China. The genus contains a single species, Brevidentavis zhangi, known from a specimen including a partial skull and cervical vertebrae. The Brevidentavis holotype shows unusually blunt teeth in its lower jaw, which the describing authors suggest may indicate a specialized diet. Its dentition shows similarities with those of hesperornitheans, and indeed it may be an early member of that group.
