Coelurosauria

Coelurosauria from Greek κοῖλος (koîlos, "hollow") + οὐρά (ourá, "tail") + σαύρα (saúra, "lizard") + -ia, meaning "hollow-tailed lizards", is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs.

Ornitholestes (from Ancient Greek ὄρνις (órnis), meaning "bird", and λῃστής (lēistḗs), meaning "robber", and thus, "bird robber") is a small theropod dinosaur of the late Jurassic (Brushy Basin Member of the Morrison Formation, middle Kimmeridgian age, about 154 million years ago) of Western Laurasia (the area that was to become North America).

Coelurus is a genus of coelurosaurian dinosaur from the Late Jurassic period (mid-late Kimmeridgian faunal stage, 155–152 million years ago). The name means "hollow tail", referring to its hollow tail vertebrae (Greek κοῖλος, koilos = hollow + οὐρά, oura = tail). Although its name is linked to one of the main divisions of theropods (Coelurosauria), it has historically been poorly understood, and sometimes confused with its better-known contemporary Ornitholestes. Like many dinosaurs studied in the early years of paleontology, it has had a confusing taxonomic history, with several species

Haplocheirus (, from Ancient Greek ἁπλός (haplós), meaning "simple", and χείρ (kheír), meaning "hand") is an extinct genus of theropod dinosaur from the Middle Jurassic Shishugou Formation of Xinjiang in China. It is generally considered to be an alvarezsauroid, although some researchers have questioned this assignment. The genus contains a single species, H. sollers, which is known from a mostly complete skeleton including the skull.

Santanaraptor (meaning "Santana Formation thief") is a genus of coelurosaurian theropod dinosaur that lived in South America during the Early Cretaceous (late Aptian-early Albian), about 112 million years ago.

Coeluridae is a historically unnatural group of generally small, carnivorous dinosaurs from the late Jurassic Period. For many years, any small Jurassic or Cretaceous theropod that did not belong to one of the more specialized families recognized at the time was classified with the coelurids, creating a confusing array of 'coelurid' theropods that were not closely related. Although they have been traditionally included in this family, there is no evidence that any of these primitive coelurosaurs form a natural group with Coelurus, the namesake of Coeluridae, to the exclusion of other tradition

Richardoestesia is a morphogenus of theropod dinosaur teeth, originally described from the Late Cretaceous of what is now Canada, the United States, and possibly also Uzbekistan. It currently contains two species, R. gilmorei and R. isosceles, and a possible third, R. asiatica, although it has been classified in its own genus Asiamericana. It has been used as a morphotaxon to describe other theropod teeth widely displaced in time and space from the type species. If all teeth assigned to the genus are truly reflective of the animals biology and taxonomic state (as some teeth go as far back as t

Tanycolagreus is a genus of coelurosaurian theropod dinosaur from the Late Jurassic (Kimmeridgian to Tithonian) of the U.S. states of Wyoming, Utah, and Colorado.

Iliosuchus (meaning "crocodile-hipped") is a genus of theropod dinosaur known from Bathonian–age (168.3 – 166.1 mya) rocks of England. It was perhaps long.

Aorun () (敖闰 pinyin Áo rùn) is a genus of carnivorous theropod dinosaur first discovered in 2006, with its scientific description published in 2013. It is generally considered one of the oldest known coelurosaurian dinosaurs and is estimated to have lived ~161.6 million years ago during the Late Jurassic Period, though some researchers consider it to be a carnosaurian instead.

Bicentenaria (meaning "two hundred year anniversary"; named after the 200th anniversary of the 1810 May Revolution in Argentina) is an extinct genus of carnivorous coelurosaurian theropods which lived during the early Late Cretaceous (Cenomanian) Candeleros Formation of Argentina. It contains the type species, B. argentina.

Aratasaurus is an extinct genus of basal coelurosaurian theropod dinosaur from the Early Cretaceous (Aptian) Romualdo Formation of Brazil. The genus contains a single species, A. museunacionali, known from a partial right leg. Aratasaurus represents the only tetrapod fossil known from the lower levels of the Romualdo Formation.

Calamosaurus (meaning "reed lizard") is a genus of small theropod dinosaur, from the Early Cretaceous of the Isle of Wight, England. It is based on two cervical vertebrae (NHMUK PV R 901), collected by Reverend William Fox. These fossils come from sedimentary rocks of the Wessex Formation and are Barremian in age. The type species of Calamosaurus, named Calamospondylus foxi by Richard Lydekker, was named in honour of Fox. Calamospondylus, however, was a preoccupied name, forcing Lydekker to change the genus name to Calamosaurus. This has subsequently led to immense confusion, with some authors

Xinjiangovenator (meaning "Xinjiang hunter") is a genus of coelurosaurian dinosaurs, possibly part of the group Maniraptora, which lived in the Lianmuqin Formation of the Tugulu Group of China, dated to the Early Cretaceous period, sometime between the Valanginian and Albian stages.

Vayuraptor (meaning "wind thief") is a genus of basal coelurosaurian (possibly megaraptoran) theropod dinosaur that lived in the Early Cretaceous (Barremian) Sao Khua Formation of Thailand. The genus contains a single species, V. nongbualamphuensis, known from a partial skeleton.

Phaedrolosaurus (meaning "elated lizard") is a dubious genus of coelurosaurian (perhaps dromaeosaurid) theropod dinosaur, based on an isolated and non-diagnostic tooth from the Early Cretaceous Lianmuqin Formation of Wuerho, in the autonomous region of Xinjiang, China.

Asiamericana is a dubious genus of coelurosaur known only from isolated teeth found in the Bissekty Formation of Uzbekistan. It was named to recognize the occurrence of similar fossil teeth in Central Asia and North America. These regions once formed a connected land mass, during the Cretaceous period.

Calamospondylus (meaning "reed vertebrae") is a dubious genus of theropod dinosaur. It lived during the Early Cretaceous and its fossils were found on the Isle of Wight in southern England. The type species is C. oweni, named in 1866 in an anonymous publication written largely by its discoverer, the Reverend William Fox. The description given by Fox was brief and listed no unique diagnostic characteristics; between this and the fact that the specimen has been lost, C. oweni is now considered a nomen dubium. The presence of expansive hollows in the bone led Fox to speculate that it was arboreal

Shanyangosaurus (meaning "Shanyang lizard") is a genus of theropod dinosaur found in Shaanxi, China, and known only from a partial sacrum, partial scapula, humeri, femur, tibia, metatarsals, and phalanges found in the Maastrichtian aged Shanyang Formation. The bones are reportedly hollow; this, along with other features of the femur and known foot bones, suggest it is a member of the coelurosauria, but a specific family cannot be determined without more material. Holtz et al. assigned Shanyangosaurus to Avetheropoda.