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Paraves is a stem–based clade
Clade

A clade is a term used in modern alpha taxonomy, the scientific classification of living and fossil organisms, to describe a monophyletic group, defined as a group consisting of a single common ancestor and all its descendants.The term "monophyletic group" is used in this article in the conventional sense of "an a...
 containing bird
Bird

Birds are wing, Bipedalismal, endothermic , vertebrate animals that lay egg . There are around 10,000 living species, making them the most numerous tetrapod vertebrates....
s (clade Aves) and other closely related dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
s. The paravians include the Avialae
Avialae

Avialae is a clade containing birds and their most immediate dinosaurian relatives....
, such as Archaeopteryx
Archaeopteryx

Archaeopteryx, sometimes referred to by its German name Urvogel , is the earliest and most primitive bird known. The name is from the Ancient Greek archaios meaning 'ancient' and pteryx meaning 'feather' or 'wing'; ....
, and the Deinonychosauria
Deinonychosauria

The Deinonychosauria were a successful clade of Theropoda in the Late Jurassic and Cretaceous Period . These carnivores are known for their switchblade-like second toes....
, which includes the dromaeosaurids and troodontids.

The name Paraves was initially coined by Paul Sereno
Paul Sereno

Paul Callistus Sereno is an United States paleontology who is the discoverer of several new dinosaur species on several continents. He has conducted excavations at sites as varied as Inner Mongolia, Argentina, Morocco and Niger....
 in 1997. The clade was defined by Sereno in 1998 as a stem–based clade containing all Maniraptora
Maniraptora

Maniraptora is a clade of coelurosaurian dinosaurs which includes the birds and the dinosaurs that were more closely related to them than to Ornithomimus velox....
 closer to Neornithes (which includes all the birds living in the world today) than to Oviraptor
Oviraptor

Oviraptor is a genus of small Mongolian Theropoda dinosaur, first discovered by the legendary paleontologist Roy Chapman Andrews, and first described by Henry Fairfield Osborn, in 1924....
.

The ancestral Paravian is a hypothetical animal; the last common ancestor of bird
Bird

Birds are wing, Bipedalismal, endothermic , vertebrate animals that lay egg . There are around 10,000 living species, making them the most numerous tetrapod vertebrates....
s, dromaeosaurids, and troodontids.






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Paraves is a stem–based clade
Clade

A clade is a term used in modern alpha taxonomy, the scientific classification of living and fossil organisms, to describe a monophyletic group, defined as a group consisting of a single common ancestor and all its descendants.The term "monophyletic group" is used in this article in the conventional sense of "an a...
 containing bird
Bird

Birds are wing, Bipedalismal, endothermic , vertebrate animals that lay egg . There are around 10,000 living species, making them the most numerous tetrapod vertebrates....
s (clade Aves) and other closely related dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
s. The paravians include the Avialae
Avialae

Avialae is a clade containing birds and their most immediate dinosaurian relatives....
, such as Archaeopteryx
Archaeopteryx

Archaeopteryx, sometimes referred to by its German name Urvogel , is the earliest and most primitive bird known. The name is from the Ancient Greek archaios meaning 'ancient' and pteryx meaning 'feather' or 'wing'; ....
, and the Deinonychosauria
Deinonychosauria

The Deinonychosauria were a successful clade of Theropoda in the Late Jurassic and Cretaceous Period . These carnivores are known for their switchblade-like second toes....
, which includes the dromaeosaurids and troodontids.

The name Paraves was initially coined by Paul Sereno
Paul Sereno

Paul Callistus Sereno is an United States paleontology who is the discoverer of several new dinosaur species on several continents. He has conducted excavations at sites as varied as Inner Mongolia, Argentina, Morocco and Niger....
 in 1997. The clade was defined by Sereno in 1998 as a stem–based clade containing all Maniraptora
Maniraptora

Maniraptora is a clade of coelurosaurian dinosaurs which includes the birds and the dinosaurs that were more closely related to them than to Ornithomimus velox....
 closer to Neornithes (which includes all the birds living in the world today) than to Oviraptor
Oviraptor

Oviraptor is a genus of small Mongolian Theropoda dinosaur, first discovered by the legendary paleontologist Roy Chapman Andrews, and first described by Henry Fairfield Osborn, in 1924....
.

The ancestral Paravian is a hypothetical animal; the last common ancestor of bird
Bird

Birds are wing, Bipedalismal, endothermic , vertebrate animals that lay egg . There are around 10,000 living species, making them the most numerous tetrapod vertebrates....
s, dromaeosaurids, and troodontids. Little can be said with certainty about this animal. The work of Xu et al. (2003) suggested that this paravian possibly was arboreal and could glide. The work of Turner et al. (2007) suggested that the ancestral paravian could not glide or fly, and that it was most likely small ( around 65 centimeters long and 600-700 grams in mass)..