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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:
Disclosure: Products details and descriptions provided by Amazon.com. Our company may receive a payment if you purchase products from them after following a link from this website.
By Oliver W. M. Rauhut
Wiley
Paperback (216 pages)
 | List Price: $131.95*
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Special Papers in Palaeontology, published by The Palaeontological Association, is a series of substantial separate works conforming to the style of the Palaeontology journal. Two issues are published each year and feature high standard illustrations. - Investigates the interrelationships and evolution of Basal Theropod Dinosaurs.
- Brings together researchers, geologists and enthusiasts who continue to find material of significance.
- Features high standard illustrations including plates, tables and 61 text-figures.
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By Thom Holmes
Enslow Publishers
Library Binding (128 pages; 1)
 | List Price: $26.60*
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By J.D. Stilwell & R. Sutherland
Elsevier
Digital
![Dinosaur sanctuary on the Chatham Islands, Southwest Pacific: First record of theropods from the K-T boundary Takatika Grit [An article from: Palaeogeography, Palaeoclimatology, Palaeoecology]](http://ecx.images-amazon.com/images/I/516708A3WQL._SL160_.jpg) | List Price: $5.95*
Lowest New Price: $5.95*
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This digital document is a journal article from Palaeogeography, Palaeoclimatology, Palaeoecology, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Cretaceous-Tertiary (K-T) boundary (ca. 65 Ma) sections on a Southwest Pacific island containing dinosaurs were unknown until March 2003 when theropod bones were recovered from the Takatika Grit on the remote Chatham Islands (latitude 44^o S, longitude 176^o W), along the Chatham Rise. Tectonic and palaeontologic evidence support the eastward extension of a ca. 900 km land bridge that connected the islands to what is now New Zealand prior to the K-T boundary. The Chathams terrestrial fauna inhabited coastal, temperate environments along a low-lying, narrow, crustal extension of the New Zealand subcontinent, characterised by a tectonically dynamic, volcanic landscape with eroding hills (horsts) adjacent to flood plains and deltas, all sediments accumulating in grabens. This finger-like tract was blanketed with a conifer and clubmoss (Lycopodiopsida) dominated forest. The Chatham Islands region would have, along with New Zealand, provided a dinosaur island sanctuary after separating from the Gondwana margin ca. 80 Ma. . 80 Ma. |
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Books LLC
Paperback (136 pages)
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Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: List of Stratigraphic Units With Theropod Tracks, List of Stratigraphic Units With Ornithischian Tracks, List of Stratigraphic Units With Dinosaur Trace Fossils, List of Stratigraphic Units With Sauropodomorph Tracks, Glen Rose Formation, Dinosaur State Park and Arboretum, Dinosaur Footprints, Grallator, Dinosaur Egg, Lark Quarry Conservation Park, Eubrontes, Breviparopus, List of Stratigraphic Units With Dinosaur Tracks, Auca Mahuevo, Connecticut River Valley Trackways, Otozoum, Anomoepus, Preprismatoolithus, Elongatoolithus, Amblydactylus, Megalosauripus, Anchisauripus. Excerpt: Aganane Formation Description Description List of dinosaur-bearing rock formations ... More: http://booksllc.net/?id=25134884 |
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By Francois Gohier
Silver Burdett Pr
Paperback
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By Peter J Makovicky
American Museum of Natural History
Unknown Binding (27 pages)
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