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Various classifications of Dinosauria
Dinosaur classification began in 1842 when Sir Richard Owen placed Iguanodon, Megalosaurus, and Hylaeosaurus in "a distinct tribe or suborder of Saurian
Dinosaur_classification
Clade of reptiles
Dinosaurs are a diverse group of warmblooded reptiles of the clade Dinosauria. They existed through most of the Mesozoic era, first appearing early in
Dinosaur
Extant clade of dinosaurs
πούς, ποδός (pous, podos) "foot"]) is one of the three major clades of dinosaur, alongside Ornithischia and Sauropodomorpha. Theropods, both extant and
Theropoda
Clade of dinosaurs
maniraptoran theropod dinosaurs, are a sub-clade of saurischian dinosaurs in phylogenetic classification. Saurischian dinosaurs are traditionally distinguished
Saurischia
Zuoyunlong Zupaysaurus Zuul Dinosaurs portal Dinosaur classification List of informally named dinosaurs List of dinosaur ichnogenera List of fossil bird
List_of_dinosaur_genera
Extinct genus of dinosaurs
those of herbivorous dinosaurs continues to lead many paleontologists to believe that these animals were omnivores. The classification of Troodon as a pachycephalosaur
Troodon
Provincial park in Alberta, Canada
Dinosaur Provincial Park is a UNESCO World Heritage Site situated 220 kilometres (137 mi) east of Calgary, Alberta, Canada; or 48 kilometres (30 mi) northeast
Dinosaur_Provincial_Park
any other posture. Dinosaur classification Dinosaur renaissance Evolution of dinosaurs Evolutionary physiology List of dinosaurs Origin of birds Argentine
Physiology_of_dinosaurs
Extinct genus of dinosaur
Yi is a genus of scansoriopterygid dinosaur from the Late Jurassic of China. Its only species, Yi qi (Mandarin pronunciation: [î tɕʰǐ]; from Chinese: 翼;
Yi_(dinosaur)
2000 live action/animated Disney film
Dinosaur is a 2000 American live-action animated adventure film directed by Ralph Zondag and Eric Leighton and written by John Harrison, Robert Nelson
Dinosaur_(2000_film)
Acceptance of dinosaurs as warm-blooded and birds as avian-dinosaurs
The dinosaur renaissance was a scientific revolution that began in the mid-1960s and led to renewed academic and popular interest in dinosaurs. It was
Dinosaur_renaissance
2015 film by Peter Sohn
The Good Dinosaur is a 2015 American animated comedy-drama adventure film produced by Pixar Animation Studios for Walt Disney Pictures. The film was directed
The_Good_Dinosaur
Vessel for dinosaur embryo development
Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were
Dinosaur_egg
Clade of reptiles
ornithischians. This classification quickly fell out of use, due to the dominant classification system by Harry Govier Seeley that grouped dinosaurs into two main
Ornithoscelida
Extinct clade of primarily herbivorous dinosaurs
Ornithischia (/ˌɔːrnəˈθɪski.ə/) is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure superficially similar to that of birds
Ornithischia
Science of classifying organisms
they had evolved from dinosaurs, a group formally named by Richard Owen in 1842. The resulting description, that of dinosaurs "giving rise to" or being
Taxonomy_(biology)
Clade of dinosaurs
ongoing investigation of the classification of Dinosauria. It was considered one of the four definite orders of dinosaurs, the others being Theropoda,
Ornithopoda
Genus of dinosaurs
gnathos/γνάθος; "jaw") is a genus of small, bipedal, carnivorous theropod dinosaur. Members of its single species Compsognathus longipes could grow to around
Compsognathus
1993 film by Steven Spielberg
team of genetic scientists have created a wildlife park of de-extinct dinosaurs. When industrial sabotage leads to a catastrophic shutdown of the park's
Jurassic_Park
Extinct genus of dinosaur
Chilesaurus is an extinct genus of herbivorous dinosaur. While its exact classification is uncertain, many researchers believe it is a theropod, with a
Chilesaurus
Second era of the Phanerozoic Eon
is characterized by the dominance of archosaurian reptiles such as the dinosaurs, and of gymnosperms such as cycads, ginkgoaceae and araucarian conifers;
Mesozoic
American paleontologist
about the dinosaurs' classification. For example, he coined the terms Maniraptoriformes and Arctometatarsus. He also proposed two classification systems
Thomas_R._Holtz_Jr.
This list of informally named dinosaurs is a listing of dinosaurs (excluding birds) that have never been given formally published scientific names. This
List of informally named dinosaurs
List_of_informally_named_dinosaurs
(See List of Indian and Madagascan Dinosaurs for a list of Dinosaurs from India). This list does not include dinosaurs that live or lived after the Mesozoic
List_of_Asian_dinosaurs
non-avian dinosaurs whose remains have been recovered in Africa. Africa has a rich fossil record. It is rich in Triassic and Early Jurassic dinosaurs. African
List_of_African_dinosaurs
Genus of sauropod dinosaur
Nagatitan (lit. 'Nāga giant') is an extinct genus of euhelopodid sauropod dinosaur known from the Early Cretaceous (Aptian–Albian ages) Khok Kruat Formation
Nagatitan
Central question in evolutionary biology of birds
of maniraptoran theropod dinosaurs that originated during the Mesozoic era. A close relationship between birds and dinosaurs was first proposed in the
Origin_of_birds
Clade of dinosaurs
the only known dinosaur group alive today. In the past, Coelurosauria was used to refer to all small theropods, but this classification has since been
Coelurosauria
Fossilized remains of eggs laid by ancient animals
possible amphibians, and reptiles. The latter group includes the many dinosaur eggs that have been recovered from Mesozoic strata. Since the organism
Egg_fossil
Extinct family of dinosaurs
family of ornithischian dinosaurs informally referred to as duck-billed dinosaurs This group is known as the duck-billed dinosaurs for the flat duck-bill
Hadrosauridae
a list of Dinosaur Train episodes. The second season of Dinosaur Train began airing on August 22, 2011, with a one-hour special, "Dinosaur Big City."
List of Dinosaur Train episodes
List_of_Dinosaur_Train_episodes
Extinct genus of dinosaurs
dinosaur from the Late Triassic period. Measuring 6 m (20 ft) long and weighing around 350 kg (770 lb), this genus was one of the earliest dinosaurs from
Herrerasaurus
Extinct clade of dinosaurs
titanosaurians; members of the group Titanosauria) were a diverse group of sauropod dinosaurs, including genera from every continent. The titanosaurs were the last
Titanosauria
Derivation of birds from a dinosaur precursor
If the latter classification is used then the larger group is termed Avialae. Currently, the relationship between non-avian dinosaurs, Archaeopteryx
Evolution_of_birds
Hadrosaurid dinosaur genus from the Late Cretaceous
(/ˌhædrəˈsɔːrəs/; lit. 'bulky lizard') is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what
Hadrosaurus
Extinct clade of theropod dinosaurs
are theropod dinosaurs which bore a superficial resemblance to the modern-day ostrich. They were fast, omnivorous or herbivorous dinosaurs from the Cretaceous
Ornithomimosauria
19th-century period of competitive fossil hunting
The Bone Wars, also known as the Great Dinosaur Rush, was a period of intense and ruthlessly competitive fossil hunting and discovery during the Gilded
Bone_Wars
Mass extinction event about 66 million years ago
66 million years ago. The event caused the extinction of all of the non-avian dinosaurs and most other tetrapods weighing more than 25 kg (55 lb), with the exception
Cretaceous–Paleogene extinction event
Cretaceous–Paleogene_extinction_event
Ornithischian dinosaur genus from Late Cretaceous US and Canada
Thescelosaurus (/ˌθɛsɪləˈsɔːrəs/ THESS-el-oh-sore-us) is a genus of ornithischian dinosaur that lived during the Late Cretaceous period in western North America.
Thescelosaurus
Extinct species of dinosaur
plant-eating dinosaur in the genus Hypsibema, and the state dinosaur of the U.S. state Missouri. One of the few official state dinosaurs, bones of the
Hypsibema_missouriensis
of dinosaurs whose remains have been recovered from North America. North America has a rich dinosaur fossil record with great diversity of dinosaurs. The
List of North American dinosaurs
List_of_North_American_dinosaurs
technical terms commonly employed in the description of dinosaur body fossils. Besides dinosaur-specific terms, it covers terms with wider usage, when
Glossary_of_dinosaur_anatomy
Genus of Late Jurassic armored dinosaur
'roof-lizard') is a genus of extinct herbivorous four-legged armored dinosaurs from the Late Jurassic, characterized by the distinctive kite-shaped upright
Stegosaurus
Sculpture park in Rapid City, South Dakota
Dinosaur Park is a dinosaur park in Rapid City, South Dakota, United States. Dedicated on May 22, 1936, it contains seven dinosaur sculptures on a hill
Dinosaur_Park
Extinct family of dinosaurs
Compsognathidae from other dinosaurs. However, classification is still complicated due to similarities to the body of several other theropod dinosaurs, as well as the
Compsognathidae
in the western United States, which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone
List of dinosaurs of the Morrison Formation
List_of_dinosaurs_of_the_Morrison_Formation
Extinct genus of dinosaurs
"small thick-headed lizard") is an extinct genus of basal marginocephalian dinosaur, containing only the type species, Micropachycephalosaurus hongtuyanensis
Micropachycephalosaurus
2025 Australian film
Jurassic World Rebirth. List of films featuring dinosaurs "Primitive War (2025)". Irish Film Classification Office. 22 October 2025. Retrieved 22 October
Primitive_War
Extinct clade of dinosaurs
("shield bearers"), often known simply as armored dinosaurs is a group of armored ornithischian dinosaurs that lived from the Early Jurassic until the end
Thyreophora
Tyrannosaurus is one of the most iconic dinosaurs and is known from numerous specimens, some of which have individually acquired notability due to their
Specimens_of_Tyrannosaurus
Genus of abelisaurid dinosaurs
Kurupi itaata is an extinct species of abelisaurid theropod dinosaurs from the Late Cretaceous Marília Formation of Brazil. It is the only species in
Kurupi_itaata
Extinct genus of theropod dinosaurs
(meaning "feathered tyrant") is a genus of proceratosaurid tyrannosauroid dinosaur which contains a single known species, Yutyrannus huali. This species lived
Yutyrannus
Extinct subfamily of dinosaurs
hadrosauroid dinosaurs. Uncertainty surrounds the size of lambeosaurs from the European continent. Hadrosaurs found there, alongside other dinosaurs, have traditionally
Lambeosaurinae
Extinct genus of dinosaurs
Murusraptor ("wall thief") is a genus of carnivorous megaraptoran theropod dinosaur from the Late Cretaceous (Coniacian age) Sierra Barrosa Formation, part
Murusraptor
Dicraeosaurid sauropod dinosaur genus from the Early Cretaceous period
Amargasaurus (/əˌmɑːrɡəˈsɔːrəs/; "La Amarga lizard") is a genus of sauropod dinosaur from the Early Cretaceous epoch (130–120 mya) of what is now Argentina
Amargasaurus
2025 film by Gareth Edwards
Garcia-Rulfo, and Ed Skrein. In Jurassic World Rebirth, the world's de-extinct dinosaurs live around the equator, which provides the last viable climate for them
Jurassic_World_Rebirth
Extinct genus of dinosaurs
somphospondylian, an indeterminate theropod, an indeterminate dinosaur of unknown classification and the foraminiferan Campanellula capuensis. Dalla Vecchia
Histriasaurus
Genus of theropod dinosaur from the early Jurassic period
/kraɪˌɒləfəˈsɔːrəs/; KRY-ə-LOH-fə-SAWR-əs) is a genus of large theropod dinosaur known from only a single species, Cryolophosaurus ellioti, from the Early
Cryolophosaurus
Hadrosaurid dinosaur genus from the Late Cretaceous period
(/sɔːˈrɒləfəs/; meaning "lizard crest") is a genus of large hadrosaurid dinosaur that lived during the Late Cretaceous period of North America and Asia
Saurolophus
2013 family film
Walking with Dinosaurs is a 2013 family film about dinosaurs set in the Late Cretaceous period, 70 million years ago. The production features computer-animated
Walking_with_Dinosaurs_(film)
Extinct family of dinosaurs
sauropodomorph dinosaurs, known from fossil remains of late Triassic period formations in Brazil, Argentina and India. The exact makeup and classification of the
Guaibasauridae
Extinct subfamily of dinosaurs
Albertosaurines, or dinosaurs of the subfamily Albertosaurinae, lived in the Late Cretaceous of United States and Canada. The subfamily was first used
Albertosaurinae
Estimating approximate age of death
Age determination in dinosaurs is primarily done through histological analyses to observe the cyclical growth marks in the bone, and by observing the
Age determination in dinosaurs
Age_determination_in_dinosaurs
Ankylosaurian dinosaur genus from the Early Cretaceous period
Gastonia is a genus of herbivorous ankylosaurian dinosaur from the Early Cretaceous of North America, around 139 to 125.77 million years ago. It is often
Gastonia_(dinosaur)
Extinct genus of dinosaurs
sandstone quarry near Bückeburg on the Harrl, a fossil was found of a small dinosaur. Most of its bones were in a poor condition and removed on preparation
Stenopelix
Extinct clade of dinosaurs
παχυκεφαλόσαυρος for 'thick headed lizards') is a clade of ornithischian dinosaurs. Along with Ceratopsia, it makes up the clade Marginocephalia. Pachycephalosaurs
Pachycephalosauria
1988 animated adventure film directed by Don Bluth
Produced by Amblin Entertainment and Sullivan Bluth Studios, it features dinosaurs living in prehistoric times. The plot features a young brown Apatosaurus
The_Land_Before_Time_(film)
thousands of years. In Stone Age Mongolia, local peoples fashioned fossil dinosaur eggshell into jewelry. In the Americas, fossil eggs may have inspired Navajo
Timeline of egg fossil research
Timeline_of_egg_fossil_research
Extinct genus of dinosaurs
(/ˌdrɪptoʊˈsɔːrəs/ DRIP-toh-SOR-əs; meaning "tearing lizard") is a genus of theropod dinosaur that lived in the present-day East Coast of the United States during the
Dryptosaurus
Study of past life through fossils
Dinosaur Heresies by paleontologist Robert Bakker and papers by John Ostrom that reframed dinosaurs as active animals in a time termed the "dinosaur renaissance"
Paleontology
Genus of Late Cretaceous dinosaur
try-SERR-ə-tops; lit. 'three-horned face') is a genus of chasmosaurine ceratopsian dinosaur that lived during the late Maastrichtian age of the Late Cretaceous period
Triceratops
Genus of reptiles (fossil)
(/niːˈʒɛərsɔːrəs, ˈnaɪdʒərsɔːrəs/) is a genus of rebbachisaurid sauropod dinosaur that lived during the middle Cretaceous period, about 115 to 105 million
Nigersaurus
Extinct clade of armored dinosaurs
Stegosauria is a group of herbivorous ornithischian dinosaurs that lived during the Jurassic and early Cretaceous periods. Stegosaurian fossils have been
Stegosauria
Clade of bird-like dinosaurs
Paraves are a widespread group of theropod dinosaurs that originated in the Middle Jurassic period. In addition to the extinct dromaeosaurids, troodontids
Paraves
Hierarchical level in biological classification
and Classification of the Tetrapods. Vol. 1: Amphibians, Reptiles, Birds. Oxford: Clarendon Press. pp. 157–219. Lambert, David (1990). Dinosaur Data
Taxonomic_rank
Extinct genus of dinosaur
ornithomimid dinosaurs from the Late Cretaceous of what is now western North America. They were long-legged, bipedal, ostrich-like dinosaurs with toothless
Struthiomimus
Species of neoceratopsian dinosaur
Himalayan war deity Beg-tse) is an extinct species of neoceratopsian dinosaurs from the early Cretaceous Ulaanoosh Formation of Mongolia. B. tse is the
Beg_tse
Genus of theropod dinosaur
Allosaurus (/ˌæləˈsɔːrəs/ AL-o-SAWR-us) is a genus of theropod dinosaur that lived 155 to 143 million years ago during the late Jurassic period (latest
Allosaurus
2026 animated film by Cal Brunker
March 30, 2026. List of films featuring dinosaurs "Paw Patrol: The Dino Movie (2026) (G)". Irish Film Classification Office. Retrieved June 10, 2026. Grobar
Paw_Patrol:_The_Dino_Movie
Group of diapsids broadly classified as reptiles
living and extinct relatives of birds and crocodilians such as non-avian dinosaurs, pterosaurs, phytosaurs, aetosaurs and rauisuchians as well as many Mesozoic
Archosaur
2026 animated film
befriend the dinosaur Yoshi, who had hatched in Brooklyn and was pursued back to his home world after accidentally breaking a dinosaur skeleton in a
The_Super_Mario_Galaxy_Movie
Extinct genus of dinosaurs
Eshanosaurus is a genus of a dinosaur from the early Jurassic Period. It is known only from a fossil partial lower jawbone, found in China. It may be a
Eshanosaurus
Extinct order of dinosaurs
Ankylosauria is a group of herbivorous dinosaurs of the clade Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms
Ankylosauria
Extinct subfamily of dinosaurs
a subfamily of ceratopsid, a group of large quadrupedal ornithischian dinosaur. Centrosaurine fossil remains are known primarily from the northern region
Centrosaurinae
Preserved remains or traces of organisms from a past geological age
bioimmuration. Fossils vary in size from one-micrometre (1 μm) bacteria to dinosaurs and trees, many meters long and weighing many tons. The largest presently
Fossil
Genus of ornithischian dinosaurs
Doolysaurus is an extinct genus of thescelosaurid ornithischian dinosaur known from the Cretaceous (Albian–lower Cenomanian) Ilseongsan Formation of South
Doolysaurus
Extinct species of reptiles
several features that are shared with both dinosaurs and crocodile-line archosaurs, making classification difficult. Similarities with theropods include
Smok_wawelski
Extinct group of dinosaurs
Oviraptorosaurs ("egg thief lizards") are a group of feathered bipedal maniraptoran dinosaurs from the Cretaceous Period of what are now Asia and North America. They
Oviraptorosauria
Extinct species of reptile
variously interpreted as either a ornithischian (possibly a stegosaurian) dinosaur or a plesiosaur. The genus contains a single species, D. blanfordi, known
Dravidosaurus
Theropod dinosaur genus from the Late Cretaceous period
Chilantaisaurus ("Jilantai Salt Lake lizard") is an extinct genus of large theropod dinosaur that lived in present-day China during the Late Cretaceous period. It was
Chilantaisaurus
Extinct genus of dinosaurs
Xenotarsosaurus is a genus of abelisaurid theropod dinosaur that lived during the Late Cretaceous of Argentina. In 1980 geologist Juan Carlos Sciutto discovered
Xenotarsosaurus
Extinct genus of dinosaurs
(meaning "serendipitous horned face") is a genus of herbivorous ornithischian dinosaur, possibly an ankylosaur, from the early Cretaceous Period of Australia
Serendipaceratops
2001 film by Joe Johnston
computer-generated and animatronic dinosaurs. A Spinosaurus replaces the Tyrannosaurus from the previous two films as the main and lead dinosaur. Jurassic Park III premiered
Jurassic_Park_III
Extinct genus of dinosaurs
plant-eating dinosaurs. The specific name gauthieri honors Dr. Jacques Gauthier, a pioneer of the phylogenetic method of classification. The initial description
Incisivosaurus
Extinct genus of dinosaurs
Ezcurra, 2010. A new early dinosaur (Saurischia: Sauropodomorpha) from the Late Triassic of Argentina: A reassessment of dinosaur origin and phylogeny. Journal
Agnosphitys
Genus of reptiles (fossil)
Austrocheirus is an extinct genus of theropod dinosaur that lived during the Late Cretaceous period. It was named and described by Martin Ezcurra, Federico
Austrocheirus
Genus of tyrannosaurid dinosaur
(meaning "Asian tyrant") is an extinct genus of tyrannosaurine theropod dinosaurs from the Late Cretaceous Nanxiong Formation of China. The genus contains
Asiatyrannus
Extinct genus of ornithomimid dinosaurs
(meaning "Mexican dragon") is an extinct genus of ornithomimid theropod dinosaurs from the late Cretaceous Cerro del Pueblo Formation of Coahuila, Mexico
Mexidracon
Genus of early sauropodomorph dinosaurs
ago') is an extinct genus of probable basal sauropodomorph saurischian dinosaurs from the Late Triassic Popo Agie Formation of Wyoming, United States.
Ahvaytum
2015 film by Colin Trevorrow
Hammond's dream to fruition. The park plunges into chaos when a transgenic dinosaur escapes from its enclosure and goes on a rampage. Universal Pictures intended
Jurassic_World
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
Male
Greek
(Δαίδαλος) Greek name DAIDALOS means "cunning worker." In mythology, this is the name of the man who created the Labyrinth for King Minos of Crete, in which the Minotaur was kept and from which the hero Theseus escaped.
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
Boy/Male
American, Australian, British, Chinese, English, French, Greek, Latin, Spanish
Spanish Form of Christopher Christ Bearer; He who Holds Christ in his Heart; Carrier of Christ; Follower of Christ
Boy/Male
Indian, Sanskrit, Tamil
Beautiful; Handsome
Girl/Female
Indian
Heart
Girl/Female
Indian
Beautiful
Girl/Female
Indian, Sikh
New Glories of God
Girl/Female
Irish
Dark-haired.
Male
Egyptian
, the name of two sons of Rameses II.
Boy/Male
Sikh
Embodiment of beloved, Peaceful beloved
Boy/Male
Teutonic American German
warrior.
Boy/Male
Tamil
Omdutt | ஓமà¯à®¤à¯à®¤à¯à®¤Â
Given by God
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
DINOSAUR CLASSIFICATION
n.
An American herbivorous dinosaur of great size, allied to the iguanodon. It is found in the Cretaceous formation.
n.
See Dinosaur.
n.
An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.
n.
One of the Dinosauria.
n.
A gigantic carnivorous dinosaur, whose fossil remains have been found in England and elsewhere.
n.
A genus of large Jurassic dinosaurs remarkable for a powerful dermal armature of plates and spines.
n.
A carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony horn core on the united nasal bones. See Illustration in Appendix.
n.
A large Wealden dinosaur from the Tilgate Forest, England. It was about twenty feet long, protected by bony plates in the skin, and armed with spines.
n.
A fabled monster, half man and half bull, confined in the labyrinth constructed by Daedalus in Crete.
n.
A genus of gigantic American Jurassic dinosaurs, having large cavities in the bodies of the dorsal vertebrae.
n.
An extinct genus of large herbivorous dinosaurs, found in Jurassic strata in America.
n.
Alt. of Dinosaurian
n.
A genus of Dinosauria found in the Jurassic formation, and remarkable for having several birdlike features.
n. pl.
An order of extinct mesozoic reptiles, mostly of large size (whence the name). Notwithstanding their size, they present birdlike characters in the skeleton, esp. in the pelvis and hind limbs. Some walked on their three-toed hind feet, thus producing the large "bird tracks," so-called, of mesozoic sandstones; others were five-toed and quadrupedal. See Illust. of Compsognathus, also Illustration of Dinosaur in Appendix.
a.
Flat at the anterior and concave at the posterior end; -- said of the centra of the vertebrae of some extinct dinouaurs.
n. pl.
An order of carnivorous dinosaurs in which the feet are less birdlike, and hence more like those of an ordinary quadruped, than in the Ornithopoda. It includes the rapacious genera Megalosaurus, Creosaurus, and their allies.
n.
A genus of American jurassic dinosaurs. A length of sixty feet is believed to have been attained by these reptiles.
n. pl.
An extinct order of herbivorous dinosaurs, including the genera Stegosaurus, Omosaurus, and their allies.
n. pl.
An extinct order of herbivorous dinosaurs having the feet of a saurian type, instead of birdlike, as they are in many dinosaurs. It includes the largest known land animals, belonging to Brontosaurus, Camarasaurus, and allied genera. See Illustration in Appendix.
n. pl.
A division of Reptilia formerly established to include the Lacertilia, Crocodilia, Dinosauria, and other groups. By some writers the name is restricted to the Lacertilia.