Upper Jurassic from small feathered coelurosaurian theropods. Among the features linking theropods to birds are bipedalism, the three-toed foot, a furcula...

Ceratosaurs are a group of theropod dinosaurs. They are defined as "all theropods sharing a more recent common ancestry with Ceratosaurus than with birds"...

are theropods and maniraptorans, close relatives to birds. Early finds were incomplete, and showed strange anatomy with features typical of theropods, prosauropods...

Sauropodomorpha. Theropods are represented by bipedal, primarily carnivorous dinosaurs (such as Tyrannosaurus and Velociraptor). Birds are theropods and the only...

counterweight when the animal walked or ran. Tetanurae are defined as all theropods more closely related to modern birds than to Ceratosaurus. Gauthier considered...

of Megalosaurid theropod dinosaur. From the Middle Jurassic of Argentina, it was one of the earliest large South American theropods. The animal was about...

"flesh lizard") is a genus of basal theropod dinosaur. Sarcosaurus is one of the earliest known Jurassic theropods: it is one of only a few from this time...

small in comparison to later theropods like Megalosaurus. Staurikosaurus and the related Herrerasaurus are definitely theropods and evolved after the sauropod...

dinosaur. It was a theropod. It was carnivorous, meaning it ate meat. The Mapusaurus was one of the largest carnivorous theropods, such as the Carcharodontosaurus...

from the Bathonian of the UK and the relationships of Middle Jurassic theropods". Zoological Journal of the Linnean Society. 158 (4): 882–935. doi:10...

South America, Europe and Africa Spinosaurids had longer arms than most theropods, the claw on the first finger was usually the largest. They evolved jaws...

Henderson, Donald M. (2007). "My theropod is bigger than yours … or not: estimating body size from skull length in theropods". Journal of Vertebrate Paleontology...

from the Bathonian of the UK and the relationships of Middle Jurassic theropods". Zoological Journal of the Linnean Society. 158 (4): 882–935. doi:10...

Carcharodontosaurus) Coelurosauria (feathered theropods, with a range of body sizes and niches) †Coelophysoidea (small, early theropods; includes Coelophysis and its...

and Henderson D.M. (2007). "My theropod is bigger than yours...or not: estimating body size from skull length in theropods". Journal of Vertebrate Paleontology...

shows the way the skull became lighter in dinosaurs, especially the large theropods. It is here not much more than a series of struts, yet provides massive...

Beipiao, Liaoning Province of China. The theroziosaurs were a group of theropods which became herbivorous. Beipiaosaurus had a toothless beak, cheek teeth...

"mid-Jurassic" after the discovery had been announced. It is in a group of theropods which are known as the Megalosaurs. Sereno P.C. et al 1994. Early Cretaceous...

million years ago. It was a rather large Therizinosaur. This is a family of theropods which were herbivores. They changed from the usual carnivorous lifestyle...

a large theropod which lived in South America. Although there is only one well-preserved skeleton, it is one of the best-understood theropods from the...

it. Naish D; Hutt S. and Martill D.M. 2001. Saurischian dinosaurs 2: theropods. In: Martill D.M., and Naish D. (eds) Dinosaurs of the Isle of Wight....

of this group... Hundreds of small, exquisitely preserved, feathered theropods were discovered in the Early Cretaceous Jehol Group of northeastern China...

serrated, recurved teeth in the maxillae (upper jaws), like the teeth of theropods, and leaf-shaped teeth in the dentary (lower jaw), like the teeth of basal...

primitive theropod dinosaur from Spain. It is notable for possessing more teeth than any other member of the Ornithomimosauria (or any other theropod), most...

Allosaurus fragilis, Carcharodontosaurus saharicus, or to birds. These theropods are close to the ancestors of the allosaurs. Metriacanthosauridae is often...

group of theropod dinosaurs as Therizinosaurus and that therizinosaurs were, more specifically, advanced, herbivorous maniraptoran theropods. Their fossils...

(2010). "Oxygen isotope evidence for semi-aquatic habits among spinosaurid theropods". Geology. 38 (2): 139–142. Bibcode:2010Geo....38..139A. doi:10.1130/G30402...

metatarsals have thinned considerably. Such a condition is unknown for other theropods, including birds, but a similar set-up occurred in three-toed horses (like...

standing on upright legs as a quadruped. Later it was realised that all theropods were bipedal. Today is known that the early proto-dinosaurs in the late...

least this clade of theropods had well-developed genuine feathers before the first known bird. Feathering in other groups of theropods is still uncertain...

Bicentenaria is a genus of carnivorous coelurosaurian theropods which lived during the early Upper Cretaceous (about 90 million years ago) in what is...

Jurassic. Theropods from the early Cretaceous of North America include Deinonychus, Utahraptor, Acrocanthosaurus, and a new genus of theropod, Microvenator...

and tail feathers. Like other theropods, dromaeosaurs were bipedal; that is, they walked on their hind legs. Other theropods walked with three toes on the...

Today, it is known that dromaeosaurs, and possibly most other extinct theropods, looked like birds and that many had feathers. When they are born, today's...

Incisivosaurus is assumed to have been feathered like most other maniraptoran theropods. Its total body length has been estimated at just under 1 meter (3 ft...

those of other meat-eating dinosaurs, such as Acrocanthosaurus. Like most theropods, Metriacanthosaurus was a meat-eater. It had three fingers on each hand...

to lessen stress. Another possibility for handling large prey is that theropods like Allosaurus were flesh grazers that take bites of flesh out of living...

ancestor of the sauropodomorphs and theropods. Overall, Bonaparte found that both Saturnalia and Guaibasaurus were more theropod-like than prosauropod-like. However...

Tarbosaurus was a large carnivorous theropod dinosaur from Asia, especially Mongolia and China. It was a tyrannosaurid dinosaur which flourished between...

Several other authors use a similar, but branch-based, definition: all theropods closer to birds than to Deinonychus. Gauthier, J. 1986. Saurischian monophyly...

Eoabelisaurus is a genus of large theropod dinosaur from the Middle Jurassic period of what is now South America. It was a bipedal carnivore that probably...

Troodontidae is a family of bird-like theropod dinosaurs. They were found mainly in Mongolia, China and North America. The first specimen, just a single...

over the world at that time. Coelophysis walked on two legs (as did all theropods). It was no more than about three feet (1 meter) tall at the hips but...

dinosaurs were warm-blooded. It is now accepted that all or most smaller theropods had feathers whose function was temperature regulation. Ostrom noted the...

modern birds. Sinosauropteryx prima is among the smallest known non-avian theropods, with the type specimen (a nearly mature individual) measuring only 68 cm...

Cryolophosaurus is a theropod dinosaur from the Lower Jurassic period. It is the only theropod to be found in Antarctica. Cryolophosaurus was discovered...

The Carcharodontosauridae were a family of carnivorous theropod dinosaurs. They are a clade in the Carnosauria. Carcharodontosaurids included three of...

Ichthyovenator was a meat-eating theropod dinosaur. It was from the Early Cretaceous, about 113 to 125 million years ago. Its fossils were found in Laos...

Neuquenraptor is a genus of dromaeosaurid theropod dinosaurs of the Late Cretaceous of Argentina, one of the first dromaeosaurids found in the Southern...

Coelurosauria is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs. This is a varied group that includes tyrannosaurs...

Grillo O.N. & Delcourt R. 2016. Allometry and body length of abelisauroid theropods: Pycnonemosaurus nevesi is the new king. Cretaceous Research 69: 71–89...

since birds are definitely descended from archosaurs, probably small theropod dinosaurs (origin of birds). Paraphyly is corrected to monophyly when the...

Jeholornis is a bird-like theropod, that lived in Asia. They lived in the Early Cretaceous. This short article about biology can be made longer. You can...

Ostafrikasaurus was a carnivorous theropod dinosaur from the Late Jurassic of southeastern Tanzania. It is known only from a fossil tooth that is 49 mm...

with feathers. It is now thought that all coelurosaurs, and perhaps all theropods, had feathers. The possibility that dinosaurs are closely related to birds...

specimen. The genus is even rarer than other small theropods, although it was one of the first small theropods described. Matthew and Brown originally placed...

des Travaux géologiques du Portugal, 46p Milner, A., 2003, "Fish-eating theropods: A short review of the systematics, biology and palaeobiogeography of...

(3 feet) long, but probably very fast. They had a stiff tail, like the theropods, to help them balance as they ran on their hind legs. Later ornithopods...

footprints including Ichnotaxon such as Grallator and Atreipus (bipedal theropods) and Anomoepus. Triassic to Recent termite mounds, which can be several...

Alectrosaurus is a theropod dinosaur related to Tyrannosaurus, Alioramus and Tarbosaurus. It lived in Mongolia and China in the Late Cretaceous period...

three centimetres long and resemble the "dino-fuzz" already known from theropods like Sinosauropteryx. The second type shows groups of 1.5 centimetres-long...

Becklespinax is a genus of large predatory theropod dinosaur from the Early Cretaceous of England. It was found in Sussex, England and lived alongside...

Crocodiles are more closely related to birds than they are to lizards. Theropod dinosaurs are even more closely related, because birds evolved from them...

Dryptosaurus ("tearing lizard") was a theropod dinosaur of the Tyrannosauroidea type. It was found in Upper Cretaceous strata of Eastern North America...

carnivorous theropods. But in other respects Tyrannosaurus's skull was significantly different from those of large non-tyrannosaurid theropods. It was extremely...

not in most theropod dinosaurs. Oxalaia's teeth were also oval in cross section, instead of flattened somewhat sideways like in most theropods. Oxalaia is...

Eustreptospondylus (meaning "well-reversed vertebrae") was a megalosaurid tetanuran theropod (a large, bipedal meat-eater) about 23-30 ft (7-9 m) long, weighing about...

Piatnitzkysaurus (meaning "Piatnitzky's lizard") is a genus of theropod dinosaur. It lived about 166 to 164 million years ago in the middle Jurassic Period...

This indicates a growth rate that is faster than in most large non-avian theropods. The existence of giant oviraptorosaurians as Gigantoraptor explains several...

Eodromaeus (meaning "dawn runner") is an extinct genus of basal theropod dinosaur from the Upper Triassic of Argentina. An almost complete articulated...

Acrocanthosaurus was a genus of theropod dinosaur that lived in North America during the Lower Cretaceous period. Its name means "high-spined lizard."...

stars Plants Venus flytrap Pitcher plant Insectivore Herbivore Omnivore Theropod (carnivorous dinosaurs) The word Carnivora comes from Latin, where carne...

living and fossil reptiles. Crocodiles, plesiosaurs, ichthyosaurs, and theropod dinosaurs have gastralia. Unlike ribs, they are not connected to the vertebrae...

It was found in Gloucestershire, England, in 1910. It was a carnivorous theropod. Proceratosaurus was first believed to be an early ancestor of Ceratosaurus...

Wakinosaurus (meaning "Wakino lizard") is a dubious genus of theropod dinosaur. It is named from the find of a single tooth. The genus is dubious (doubtful)...

[ˈtʃiːt̪ɪpət̪i] in Hindi, meaning 'funeral pyre lord') is a genus of oviraptorid theropod dinosaur from the Late Cretaceous Period of what is now Mongolia. The type...

Cristatusaurus was a carnivorous theropod dinosaur from the Early Cretaceous of West Africa. Its fossils look very similar to the ones from Baryonyx and...

Monolophosaurus was a medium-sized theropod from China that lived during the Jurassic period. It had one feature not found on any other meat-eating dinosaur...

of brain volume to estimated live body mass. Most dinosaurs, and most theropods, had brains no better than present-day reptiles, so far as can be estimated...

Duriavenator is a genus of theropod dinosaur described in 2008. It was excavated in Dorset. The type species is D. hesperis, formerly known as Megalosaurus...

Sinornithoides (meaning "Chinese bird form") is a genus of troodontid theropod dinosaur. It lived during the Early Cretaceous (Barremian stage, around...

Shuvuuia is a genus of bird-like theropod dinosaur from the later Cretaceous of Mongolia. It is a member of the family Alvarezsauridae, small coelurosaurian...

Magnosaurus (meaning 'large lizard') was a theropod dinosaur from the Middle Jurassic of England. The main species, Magnosaurus nethercombensis has poorly...

samniticus is one of the most important recent dinosaur finds. It is a tiny theropod (meat-eater) fossil found in Cretaceous limestone in southern Italy near...

However, birds are only distantly related to this group as birds are theropod dinosaurs. Ornithischians with well known anatomical adaptations include...

Sinosaurus (meaning "Chinese lizard") was a tetanuran theropod dinosaur which lived during the Early Jurassic Period. Its fossils were found in China....

maximum weight of 3 tons (3.1–3.6 short tons).[source?] Currie, P. (2005). "Theropods, including birds." Pp. 367-397 in Currie and Koppelhus (eds)., Dinosaur...

Australovenator is a medium-sized theropod dinosaur that lived in Australia about 100 million years ago. The fossil bones of the dinosaur were found at...

Tanycolagreus is a genus of coelurosaur theropod from the Upper Jurassic of North America. The fossil holotype was donated to science by an anonymous benefactor...

grown. Turner, A.S.; Hwang, S.H.; Norell, M.A. (2007). "A small derived theropod from Öösh, Early Cretaceous, Baykhangor Mongolia" (PDF). American Museum...

Niedźwiedzki, Grzegorz 2008. A dicynodont−theropod association in the latest Triassic of Poland (2008). "A Dicynodont-Theropod Association in the Latest Triassic...

Carnosauria are a subgroup of the theropod dinosaurs. They are the clade Carnosauria. The term was once used very widely, but is now defined more narrowly...

Antrodemus is a type of large theropod dinosaur from the Morrison Formation of Utah. Antrodemus co-existed with many other large carnivores of the time...

other notable giant theropods (e.g. Carcharodontosaurus, Acrocanthosaurus, and Mapusaurus) may also have rivaled these giant theropods in size. Another very...

carnivorous dinosaur from the middle Jurassic Period. It is a megalosaurid theropod closely related to Afrovenator and its fossils were found in France It...

discovered maniraptoran. It was a very fast moving, light-weight, bird-like theropod dinosaur that lived in the late Cretaceous in what is now Mongolia, around...

Marshosaurus is a genus of medium to large-sized carnivorous theropod dinosaur. It is from the Late Jurassic Morrison Formation of Utah and Colorado. This...

Alxasaurus (meaning "Alxa lizard") was a therizinosaur theropod that lived during the Lower Cretaceous, about 112 to 100 million years ago. Like its near...

Nanuqsaurus ('meaning polar bear lizard') is a genus of theropod dinosaur. It is only known from one specimen, DMNH 21461, a partial skull roof found in...

"Avian ancestors. A review of the phylogenetic relationships of the theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae". SpringerBriefs...

Unenlagia was a theropod from the mid-Cretaceous, living about 90 million years ago. The first birds appeared 150 million years ago, evolving from dinosaurs...

Altispinax (meaning "with high spines") is an predatory theropod dinosaur that lived near Sussex, England. It lived during the Early Cretaceous, about...

Aucasaurus was a medium-sized theropod dinosaur from Argentina that lived during the Upper Cretaceous. It was smaller than its relative Carnotaurus. It...

Xiaotingia is an extinct genus of Archaeopteryx-like theropod dinosaur from early Upper Jurassic deposits of western Liaoning, China. The Chinese team...

Coelurus (meaning "hollow") is a poorly known genus. It was perhaps a bipedal theropod dinosaur 6 feet (1.8 m) long, weighing roughly 20 kg. Its femur (thigh...

Hesperornithoides is a troodontid theropod dinosaur from the Upper Jurassic Morrison Formation of western North America. The fossil was found in Wyoming...

"wing" and 奇; qí; "strange" Xu X. et al 2015. A bizarre Jurassic maniraptoran theropod with preserved evidence of membranous wings. Nature. 521, 70–73. [1]...

Elaphrosaurus is a genus of theropod dinosaur that lived during the Upper Jurassic period, about 150 million years ago. It was 15 feet long, and weighed...

Chuandongocoelurus is a tetanuran theropod dinosaur from the Jurassic of China. The type species Chuandongocoelurus primitivus was first described and...

Balaur is a genus of dromaeosaurid theropod dinosaur that lived in southern Europe during the Upper Cretaceous, about 70 million years ago. The specimen...

Dakotaraptor is a genus of large carnivorous theropod dromaeosaurid dinosaur. It lived in North America during the Late Cretaceous period. Dakotaraptor...

Komlosaurus (Komlo lizard) is a theropod dinosaur known from footprints found in Hungary. This short article about biology can be made longer. You can...

Jurassic, and a proposed terminology of the maxilla anatomy in nonavian theropods. PLoS ONE 9 (3): e88905. [1] Richmond D.R. & Morris T.H. 1999. Stratigraphy...

perhaps 6.5-14 pounds (3-6.4 kg). This turkey-sized predator was an advanced theropod that lived during the early Cretaceous period, about 119 million to 113...

Masiakasaurus was a small predatory theropod dinosaur from the Late Cretaceous of Madagascar. Its a small, bipedal, meat-eating dinosaur that had forward-pointing...

A.; Makovicky P.J; Apesteguía S. (2011). "The teeth of the unenlagiine theropod Buitreraptor from the Cretaceous of Patagonia, Argentina, and the unusual...

Vann, David R.; Dodson, Peter (2005). "Dental morphology and variation in theropod dinosaurs: Implications for the taxonomic identification of isolated teeth"...

and shared its habitat with other large herbivores, as well as large theropods and crocodylomorphs. Sereno P.C. et al 2007. Structural extremes in a...

Sigilmassasaurus is a controversial genus of carnivorous theropod dinosaur from the Late Cretaceous of Africa. Its name means ''Sijilmassa lizard", referring...

Concavenator is a large, sail-backed, meat-eating theropod from prehistoric Spain. It roamed this place during the Early Cretaceous period. Some scientists...

Baryonyx was a carnivorous theropod dinosaur discovered in clay pits just south of Dorking, England, and also in northern Spain. It has been dated to the...

Achillobator is a dromaeosaurid theropod dinosaur from the Upper Cretaceous period of what is now Mongolia. It lived about 90 million years ago. It was...

Allosauroidea were a clade of theropod dinosaurs. The oldest-known allosauroid, Shidaisaurus, appeared in the early Middle Jurassic (probably Bajocian...

mis-identified it as crocodilian. The remains were from two different creatures. Eventually, the theropod remains were named Streptospondylus altdorfensis....

Fukuiraptor ("thief of Fukui") was a medium-sized theropod dinosaur of the Lower Cretaceous. The fossil was found in the Kitadani Quarry, Fukui Prefecture...

Its only species is Zhuchengtyrannus magnus. Zhuchengtyrannus, a large theropod, is estimated to be comparable in size to both Tarbosaurus and Tyrannosaurus...

on its nose, and a pair of small horns above its eyes. Unusually, for a theropod, Ceratosaurus had armour: small osteoderms ran down the middle of its back...

Lianhi, Hou, Zhang, Lijun, Xu, Xing. 2009. A pre-Archaeopteryx troodontid theropod from China with long feathers on the metatarsus. Nature 461, 640-643. doi:10...

million years before the Santana Formation. Various remains of non-avian theropods, avialans, ornithischians, and possibly oviraptorosaurs have been found...

in the 1940s, it has been placed into at least nine different groups of theropod dinosaurs. Some researchers think it was related to smaller dinosaurs like...

or omnivores, rather than pure carnivores. Currie, Philip J. (2005). "Theropods, including birds". In Currie, Phillip J.; Koppelhus, Eva (eds.). Dinosaur...

511-531 Spielmann J.A. et al 2007. Oldest records of the Late Triassic theropod dinosaur Coelophysis bauri. In S.G. Lucas & J.A. Spielmann (eds) The global...

Gorgosaurus is a genus of theropod dinosaur that lived in western North America during the Upper Cretaceous, between about 76.5 and 75 million years ago...

eggs in the same places year after year, and were followed by bipedal theropods who preyed on them. Their breeding grounds had many thousands of eggs...

2nd ed, University of North Carolina Press, p. 104. Molnar R.E. 2001. Theropod paleopathology: a literature survey: In: Mesozoic vertebrate life, edited...

Ozraptor was a theropod genus that lived millions of years ago during Middle Jurassic Australia. It co-existed alongside Rhoetosaurus and other types of...

although many casts of the material still exist. Poekilopleuron is a genus of theropod with a long and complex history. The genus was first named and described...

fly well, but have a reduced furcula, or none at all. Several groups of theropod dinosaurs had furculae. Proctor, Noble S.; Lynch, Patrick J. (1998). Manual...

teeth angled forward, a feature only seen in Masiakasaurus among other theropods. The tail of Epidexipteryx bore unusual vertebrae towards the tip which...

Compsognathus was a small carnivorous theropod dinosaur, from the end of the Jurassic period, around 144 million years ago. It was about a metre long,...

Abelisaurus is a genus of theropod dinosaur. They lived in South America during the Upper Cretaceous period. There is one species in the genus Abelisaurus...

Ornithomimidae ("bird-mimics") is a group of theropod dinosaurs which bore a superficial resemblance to modern ostriches. They were fast, omnivorous or...

Procompsognathus was a small, speedy theropod dinosaur. This meat-eater lived during the late Triassic period, about 210 million years ago (mya). It probably...

"Megaraptor namunhuaiquii, gen. et sp. nov., a large-clawed, Late Cretaceous theropod from Patagonia". Journal of Vertebrate Paleontology. 18: 4–9. doi:10.1080/02724634...

Lythronax is an extinct genus of tyrannosaurid theropod dinosaur. It lived in the Upper Cretaceous epoch about 80 million years ago (mya). Only one specimen...

Acheroraptor was a theropod dromaeosaurid that lived in Present day montana USA. It lived during the Maastrichtian stage of the late cretaceous period...

flight. Anchiornis also had a more avian wrist than other non-avialan theropods. The authors first thought that Anchiornis could fly or glide. However...

iguidensis to be a valid species. Carcharodontosaurus is not too much a famous theropod, and it only appeared in a few assets of media. It made its first debut...

Adasaurus is a Dromaeosaur theropod dinosaur from the Upper Cretaceous. It lived in what is now Central Asia. It was a small carnivore, with a large, sickle-shaped...

but also their descendants the mammals as well (in the same way that theropod dinosaurs include the birds as a sub-clade). They can be defined in traditional...

remains we know that birds evolved from small carnivorous dinosaurs (theropods) in the Jurassic period. They radiated into a huge variety in the Lower...

Irritator (say: irr-irr-it-at-or) is a genus of spinosaurid theropod dinosaur that lived in what is now Brazil, in the Lower Cretaceous. Its fossils are...

inherited together with over a hundred anatomical features from their theropod dinosaur ancestors. These four toes are arranged into four main patterns...

Geological Journal, 41: 419–437. Senter, P. 2006. Scapular orientation in theropods and basal birds, and the origin of flapping flight. Acta Palaeontologica...

Dienoycus is a genus of dinosaur. Dienocus is a dromaeosaurid theropod dinosaur. There are one known species in this genus: Deinonychus antirrhopus. This...

known dromaeosaur. Their results, along with the small size of other theropods found at the base of paravian lineages, suggest that small size was not...

John J.; Jackson, Frankie D. (2002). "Embryos and eggs for the Cretaceous theropod dinosaur Troodon formosus". Journal of Vertebrate Paleontology. 22 (3):...

function of the spines is not known. They may have operated as a defence from theropod attack from above. Another idea is that they supported a sail-like structure...

close-set grinding teeth. Its defense had to stand up to attacks from taller theropods, hence the bony shield which covered its neck. Holes made by teeth have...

Animals included the pterosaur Alanqa, types of giant crocodylomorphs, and theropod predators close to the size of T. rex. The largest predator was Spinosaurus...

out which creature holds a certain title, such as the "most powerful" theropod. Tom Sutcliffe in the Independent found that it was visually "polished...

Yangchuanosaurus was a genus of theropod dinosaur from the Jurassic of China. It was a fairly typical carnosaur, with a large head, sharp, serrated teeth...

is closed. Some extinct cousins of crocodiles walked on two legs like Theropod dinosaurs. The scientists found preserved footprints in South Korea. They...

pre-Archaeopteryx troodontid theropod from China with long feathers on the metatarsus (2009). "A pre-Archaeopteryx troodontid theropod from China with long feathers...

to grind tough plant matter. An example of this is the early Cretaceous theropod Caudipteryx zoui from northeastern China. It was discovered with a series...

sauropodomorph Buriolestes, the crocodile-like Cerritosaurus and the possible theropod Staurikosaurus. Flávio A. Pretto; Max C. Langer; Cesar L. Schultz 2018...

These were found to include mostly Iguanodon-like footprints. Carnivorous theropod tracks are also present. The site features the Dinosaur Ridge Exhibit Hall...

Qianzhousaurus is a genus of coelurosaurian theropod dinosaurs. So far only one species has been named: the type species Qianzhousaurus sinensis. Nicknamed...

Because of this, it is the smallest living bird as well as the smallest theropod dinosaur on record. Females grow to up to 6.1 centimeters (2.4 inches)...

mythology Lamanna M.C. et al 2014. A new large-bodied oviraptorosaurian theropod dinosaur from the Latest Cretaceous of western North America. PLoS ONE...

a dinosaur, but was related. Quetzalcoatlus coexisted with the massive theropod Tyrannosaurus rex. A college student found the first Quetzalcoatlus fossil...

Megalosaurus - The first dinosaur to be named. Concavenator - A medium-sized theropod. Mosasaurus - A large marine reptile named after the group known as mosasaurs...

Triassic, early Jurassic, late Jurassic and Cretaceous periods. Predatory theropod dinosaurs, which occupied most terrestrial carnivore niches during the...

8 to 66.5 milion years ago. The Eotriceratops coexisted with the large theropod Tyrannosaurid called as Albertosaurus, the famous Ceratopsids Triceratops...

with a bite to the neck before disemboweling her. During the heat, the theropod attempts to steal a dead Aegyptosaurus from a pack of female Rugops, but...

discovery of feathers on dinobirds clinched the argument for the smaller theropods. Fossil tracks suggest that sauropod dinosaurs moved in structured herds...

150 years ago Thomas Henry Huxley compared Archaeopteryx with a small theropod dinosaur, Compsognathus. These two fossils came from the Solnhofen limestone...

Liaoning, N.E. China. This shows that birds did evolve from coelurosaurian theropod dinosaurs. Studies on stem tetrapods from the Upper Devonian. The early...

Chialingosaurus Chiayusaurus Chienkosaurus – a chimera of crocodyliform and theropod (Szechuanosaurus) remains "Chihuahuasaurus" – nomen nudum; Sonorasaurus...

Jeholornis. This is a small theropod, not a bird....

Nematodes Nematomorpha Molluscs There are some vertebrates: A well preserved theropod dinosaur tail, with preserved feathers. Fossils of enantiornithine birds...

A fossil melée involving a stegosaurian (Tuojiangosaurus) and a mid-sized theropod (Monolophosaurus), Field Museum in Chicago...

Herrerasaurus was one of the earliest dinosaurs. All known fossils of this carnivore have been discovered in Upper Triassic strata dated to 231.4 million...

Saurornithoides was a fast running dinosaur from 79 million years ago. It was related to Troodon. Its fossils have been found in Mongolia and China. Like...

Harpymimus (meaning "harpy mimic") is an ornithomimosaurian dinosaur that lived during the Early Cretaceous in Mongolia around 107-100 million years ago...

Ekrixinatosaurus Cretaceous carnivore — Eoraptor Triassic omnivore The earliest known theropod. Epachthosaurus Cretaceous herbivore — Futalognkosaurus Cretaceous herbivore...

Borogovia (meaning borogove, which is a fictional creature from Lewis Carroll's "Jabberwocky") is a Troodontid from late Cretaceous Mongolia. It lived...

Sinovenator is a small troodontid dinosaur, about the size of a chicken. It is from the early Cretaceous period, 128.2 million years ago. Two fossils were...