The Winton Formation had a faunal assemblage including bivalves, gastropods, insects, the lungfish Metaceratodus, turtles, the crocodilian Isisfordia, pterosaurs, and several types of dinosaurs, such as the theropod Australovenator, the sauropod Wintonotitan, and unnamed ankylosaurians and hypsilophodonts.
In the time of Joan Wiffen's theropod, the continent Tasmantis had split off from Gondwana, meaning that this theropod dinosaur must have been unique to NZ, which scientists believe was much closer to the South Pole.
In 1966, the French paleontologists C. Larsonneur and Albert-Félix de Lapparent described a partial theropod skeleton from the Triassic-Jurassic boundary of Normandy as Halticosaurus sp.
Lurdusaurus was contemporaneous with the bizarre large theropod Suchomimus, which some believe to be synonymous with the slightly earlier Baryonyx from England, and with the sympatric Ouranosaurus, notable for its tall-spined vertebrae.
Mark Norell is the direct discoverer of enigmatic theropods Shuvuuia and Mononykus, the discovery of Ukhaa Tolgod, the richest Cretaceous fossil locality in the world, the first embryo of a theropod dinosaur, the description of dinosaurs with feathers, and the first indication of dinosaur nesting.
I. Kirkland, B. B. Britt, C. H. Whittle, S. K. Madsen and D. L. Burge, A small coelurosaurian theropod from the Yellow Cat Member of the Cedar Mountain Formation (Lower Cretaceous, Barremian) of eastern Utah.
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Three skeletons of a theropod were discovered in 1993 by Christopher Whittle near Cisco in the basal Yellow Cat Member of the Cedar Mountain Formation of Utah, dating to the Barremian.
They also shared the feature of intramandibular articulation, something that is actually absent in Archaeopteryx, but found in many of its theropod relatives.
Re-evaluation of the bone in the nineties after being prepared out of the rock by John Albert Long and Ralph Molnar showed that it actually was the shinbone of some sort of theropod.
Proavis refers to a hypothetical extinct species or hypothetical extinct taxon and was coined in the early 20th century in an attempt to support and explain the hypothetical evolutionary steps and anatomical adaptations leading from non-avian theropod dinosaurs to birds.
Megapnosaurus, a theropod dinosaur, was formerly called Syntarsus, and is occasionally still referred to as such.
paramacellodid, scincomorphan, and xenosaurid lizards, the shartegosuchid crocodyliform Kyasuchus, the tritylodontid cynodont Xenocretosuchus, the triconodont mammal Gobiconodon, the ceratopsian dinosaur Psittacosaurus, troodontid theropod dinosaurs, and sauropods, all of which have been described from the locality in the past few decades.
In 1948, a Soviet-Mongolian expedition found the remains of a small theropod in de Gobi Desert near Nemegt.
In 2000 Ronan Allain and Philippe Taquet named a second small theropod from the same layers: Pyroraptor.
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Between 1992 and 1995 amateur paleontologists Patrick Méchin and Annie Méchin-Salessy uncovered the remains of a small theropod in the Grès à Reptiles Formation (Campanian-Maastrichtian) at La Bastide Neuve, near Fox-Amphoux.
A study of theropod relationships by Fernando Novas and Sebastian Apesteguia in 2003 showed that Velocisaurus was a close relative of the strange ceratosaur Masiakasaurus.
In his 1990 review, Ralph Molnar noted that the type cannot be distinguished from tail vertebrae from ornithomimids or allosaurids, and considered it to be an indeterminate theropod and a nomen dubium or (more likely) an invalid taxon.
Animals named by Langston include the theropod Acrocanthosaurus (1950), the hadrosaurid dinosaur Lophorhothon (1960), and the microsaur Carrolla (1986).
The Winton Formation had a faunal assemblage including bivalves, gastropods, insects, the lungfish Metaceratodus, turtles, the crocodilian Isisfordia, pterosaurs, and several types of dinosaurs, such as the theropod Australovenator, the sauropod Diamantinasaurus, and unnamed ankylosaurians and hypsilophodonts.
In 1986, Ricardo Martínez, Olga Giménez, Jorge Rodríguez and Graciela Bochatey described the theropod fossils and coined the genus and species Xenotarsosaurus bonapartei for them.