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Theropod Dinosaurs
The Theropoda (meaning "beast-footed") dinosaurs
were a suborder of the the
Saurischian
dinosaurs. Dinosaurs in the Theropod suborder include, among others,
Allosaurus,
Spinosaurus, and
Tyrannosaurus rex.
Theropods first appeared during the
Triassic period,
about 230 million years ago, and gradually diverged into
many different lineages.
At some time during the
Jurassic period,
or perhaps earlier, one of the lineages gave rise to the first
first birds.
Theropod dinosaurs survived until the
end of the
Cretaceous period,
about 65 million years ago, when all the remaining non-avian
dinosaurs became
extinct,
although of course birds (which technically are a type of Theropod dinosaur)
survive to the present day.
Theropod dinosaurs were bipedal (walked on two legs). Their forelimbs
generally had a highly restricted range of motion, for example
they could not rotate ("pronate") their forearms so that their
palms faced backwards or towards the ground.
The vast majority of theropods were carnivores (meat-eaters), although
a number of herbivorous (plant-eating) species did evolve towards
during
Cretaceous period
(see, for example,
Alxasaurus).
Theropod dinosaurs first appeared about 230 million years ago, and survived until the end of the Cretaceous period, about 65 million years ago
Types of Theropod Dinosaur
Here is a list of some Theropod dinosaurs:
Related Information & Resources
See Also
Theropod Books
Here are some books from Amazon.com:
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By Dinosaur Facts & Figures: The Theropods; Dinosaur Facts & Figures: The Sauropods Rubén Molina-Pérez & David Connolly
Princeton University Press
Released: 2019-06-25
Hardcover (288 pages)
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An illustrated record book of theropod facts and figures―from the biggest to the fastest to the smartest The theropod dinosaurs ruled the planet for millions of years, with species ranging from the mighty Tyrannosaurus rex to feathered raptors no bigger than turkeys. Dinosaur Facts and Figures is a stunningly illustrated book of records for these marvelous creatures―such as the biggest, the smallest, and the fastest theropods, as well as the ones with the most powerful bite. This one-of-a-kind compendium features more than 3,000 records, covers some 750 theropod species, and includes a wealth of illustrations ranging from diagrams and technical drawings to full-color reconstructions of specimens. The book is divided into sections that put numerous amazing theropod facts at your fingertips. “Comparing Species” is organized by taxonomic group and gives comparisons of the size of species, how long ago they lived, and when they were discovered. “Mesozoic Calendar” includes spreads showing the positions of the continents at different geological time periods and reconstructions of creatures from each period. “Prehistoric Puzzle” compares bones, teeth, and feathers while “Theropod Life” uses vivid, user-friendly graphics to answer questions such as which dinosaur was the smartest and which had the most powerful bite. Other sections chart theropod distribution on the contemporary world map, provide comprehensive illustrated listings of footprints, compile the physical specifications of all known theropods and Mesozoic birds, and much more. - The essential illustrated record book for anyone interested in dinosaurs
- Features thousands of records on everything from the smartest and fastest theropods to the largest theropod eggs
- Includes more than 2,000 diagrams and drawings and more than 300 digital reconstructions
- Covers more than 750 theropod species, including Mesozoic birds and other dinosauromorphs
- Provides detailed listings of footprints, biometric specifications, and scholarly and popular references
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By Rubén Molina-Pérez
The Natural History Museum
Released: 2019-06-06
Hardcover (288 pages)
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Theropod dinosaurs ruled the planet for millions of years, with species ranging from the mighty Tyrannosaurus rex to feathered raptors no bigger than turkeys. The Encyclopedia of Dinosaurs: The Theropods is a stunningly illustrated guide packed with everything you could ever wish to know about theropods.
This one-of-a-kind compendium features more than 3,000 records, covers some 750 theropod species, and includes a wealth of illustrations ranging from diagrams and technical drawings to full-colour reconstructions of specimens. The book is divided into sections that put numerous amazing theropod facts at your fingertips.
'Comparing Species' reveals detailed size comparisons, how long ago they lived, and when they were discovered. 'Mesozoic Calendar' shows the positions of the continents at different geological time periods and reconstructions of creatures from each period. 'Prehistoric Puzzle' compares bones, teeth, and feathers while 'Theropod Life' uses vivid, user-friendly graphics to answer questions such as which dinosaur was the smartest and which had the most powerful bite.
Other sections chart theropod distribution on the contemporary world map, provide comprehensive illustrated listings of footprints, compile the physical specifications of all known theropods and Mesozoic birds, and much more. |
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By Dinosaur Facts & Figures: The Theropods; Dinosaur Facts & Figures: The Sauropods Rubén Molina-Pérez
Princeton University Press
Released: 2020-07-28
Hardcover (272 pages)
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An illustrated record book of sauropod facts and figures―the hugest, the oldest, the most intelligent, and more The sauropod dinosaurs roamed the planet for millions of years, with creatures ranging from the smallest of the sauropods, Magyarosaurus, to the huge Brachiosaurus. This illustrated book of records is an essential compendium of sauropod facts and figures―from the biggest and the oldest to the smallest and the rarest. It covers every known species and features more than 2,000 diagrams and technical drawings along with hundreds of full-color reconstructions of specimens. The book is divided into sections that put numerous amazing sauropod facts at your fingertips. "Comparing Species" is organized by taxonomic group and gives comparisons of the size of species, how long ago they lived, and when they were discovered. "Mesozoic Calendar" includes page spreads showing the positions of the continents at different geological time periods and reconstructions of creatures from each period. "Prehistoric Puzzles" compares bones, teeth, and feathers while "Sauropod Life" presents user-friendly graphics to answer questions like what did they eat and which was the most intelligent. There are sections that chart sauropod distribution on the contemporary world map, provide illustrated listings of footprints, compile the physical specifications of all known sauropods, and more. - The essential illustrated record book for anyone interested in dinosaurs
- Features a wealth of comparative records
- Includes more than 2,000 diagrams and technical drawings and hundreds of full-color reconstructions
- Covers all known sauropodomorph species
- Provides listings of footprints, biometric specifications, and scholarly and popular references
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By Tracy Lee Ford
Independently published
Paperback (58 pages)
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This is a continuation of my research started in 1997 on why I believe theropods lacked lips. My first talk was given at the Mesa Southwest Museum (now Arizona Museum of Natural History) was on this subject in 1997. I believe theropods (meat eating dinosaurs) lacked lips and I did my best to address the many arguments against this and write about some reasons that haven’t been discussed before. I’m publishing this work on my own to fund my research, and hope to continue adding to Paleofile Bulletins in the future. |
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By Steve Parker
Franklin Watts
Released: 2017-09-01
Paperback (32 pages)
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Discover the world in which extinct predators lived, their physical characteristics, and how they hunted and survived.
The theropod group of dinosaurs saw the biggest, fiercest predators that ever walked the Earth - and also some of the smallest, which were nevertheless incredibly deadly for their size. Hundreds of kinds of these killers existed through the Age of Dinosaurs, from about 230 to 66 million years ago. |
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By John H. Ostrom
The Yale Peabody Museum
Released: 2019-10-22
Paperback (196 pages)
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John H. Ostrom’s expeditions to the Bighorn Basin of Wyoming and Montana in the 1960s resulted in discoveries and research that would change long-held concepts in paleontology. This fiftieth-anniversary edition of his now well-known description of the type specimen of Deinonychus antirrhopus revisits the work that redefined theropod dinosaurs as the intelligent, agile, and gregarious ancestors of modern birds and led in the late twentieth century to a renaissance in the study of dinosaurs and the evolution of flight. |
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By Robert Gay
lulu.com
Paperback (44 pages)
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Notes on Early Mesozoic Theropods contains two papers on the poorly studied late Triassic and early Jurassic theropod dinosaur fauna of North America.The author discusses the evidence that has been used to support cannibalism hypothesis in the late Triassic dinosaur Coelophysis, and presents new evidence that disproves this commonly cited hypothesis.In the second paper, the author names a new genus and species of theropod dinosaur from the early Jurassic Kayenta Formation of Arizona. The new taxon represents the oldest yet-known example of a Tetanuran theropod in North America.For those interested in the paleontological history of the American southwest or the early evolutionary history of this interesting clade of dinosaurs, Notes on Early Mesozoic Theropods adds more information to the emerging picture of life in the southwest over 190 million years ago. |
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By Thom Holmes
Brand: Enslow Publishers
Library Binding (128 pages)
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Provides information about the evolution, range, anatomy, physiology, reproduction, food, and extinction of the tyrannosaurs and other meat-eating dinosaurs known as theropods. |
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By Federico Agnolin
Brand: Springer
Released: 2013-02-27
Paperback (108 pages)
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Although consensus exists among researchers that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds. The last 20 years witnessed the discovery of a wide array of avian-like theropods that has considerably amplified the anatomical disparity among deinonychosaurians, some of which resemble Archaeopteryx more than Deinonychus. Among these newly discovered theropods that show remarkable bird-like characteristics are the four-winged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. A bizarre group of minute-sized coelurosaurs, the Scansoriopterygidae, also exhibits some avian similarities that lead some authors to interpret them as more closely related to birds than other dinosaurs. With the aim to explore the phylogenetic relationships of these coelurosaurians and birds, we merged recently published integrative databases, resulting in significant changes in the topological distribution of taxa within Paraves. We present evidence that Dromaeosauridae, Microraptoria, Unenlagiidae, and Anchiornis + Xiaotingia form successive sister taxa of Aves, and that the Scansoriopterygidae are basal coelurosaurians not closely related to birds. The implications in the evolutionary sequence of anatomical characters leading to birds, including the origin of flight, are also considered in light of this new phylogenetic hypothesis. |
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