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Oviraptoridae is a group of bird-like, herbivorous and omnivorous maniraptoran dinosaurs. Oviraptorids are characterized by their toothless, parrot-like beaks and, in some cases, elaborate crests . They were generally small, measuring between one and two metres long in most cases, though some possible oviraptorids were enormous.
In 2007, Xu and team assigned Gigantoraptor to the Oviraptoridae, in a basal (primitive) position. The anatomy of Gigantoraptor includes the diagnostic features of the Oviraptorosaurs . However, it also includes several features found in more derived eumaniraptoran dinosaurs, such as a forelimb/hindlimb ratio of 60%, a lack of expansion of the ...
The Oviraptoridae is further divided into the small, short-armed, and crestless subfamily Ingeniinae, and the larger, crested, long-armed Oviraptorinae. However, some phylogenetic studies have suggested that many traditional members of the Caenagnathidae were more closely related to the crested oviraptorids.
Oviraptor (/ ˈ oʊ v ɪ r æ p t ər /; lit. ' egg thief ') is a genus of oviraptorid dinosaur that lived in Asia during the Late Cretaceous period. The first remains were collected from the Djadokhta Formation of Mongolia in 1923 during a paleontological expedition led by Roy Chapman Andrews, and in the following year the genus and type species Oviraptor philoceratops were named by Henry ...
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Gestation, Incubation, and Longevity of Selected Animals; David Crystal, The Cambridge Factfinder Cambridge: Cambridge University Press, 1998 (84). Online animal encyclopedia; Study finds wide range in pregnancy length
Beibeilong Temporal range: Late Cretaceous (Cenomanian - Coniacian), ~ 96–88 Ma PreꞒ Ꞓ O S D C P T J K Pg N Skeleton and line drawing of Baby Louie Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Superfamily: † Caenagnathoidea Family: † Caenagnathidae Genus: † Beibeilong Pu et al., 2017 Type species ...
Heyuannia was assigned by Lü to the Oviraptoridae in 2002. Its exact placement within this group is uncertain. Later analyses either resulted in a position in the Oviraptorinae or the Ingeniinae. According to Lü the morphology of the shoulder girdle of Heyuannia supports the hypothesis that oviraptorosaurians were secondarily flightless birds.