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Riojasaurus
Click here for more Riojasaurus Pictures
Riojasaurus was a herbivore (plant-eater) that lived in South America
during the late Triassic period,
about 225 to 219 million years ago.
The name means "Rioja lizard" and was chosen because the
first specimen was found in the La Rioja Province of Argentina.
Riojasaurus was about to 33 feet (10 meters) long. It had a heavy body
and bulky legs, as well as a long neck and tail.
The structure of the animal's
skeleton suggests that it always walked on all
four legs (relatively unusual for an early dinosaur), although it
could probably rear up on its hind legs.

Riojasaurus was a herbivore (plant-eater) that lived from 225 to 219 million years ago

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Riojasaurus Facts
Here is a summary of some of the key facts about Riojasaurus:
- Riojasaurus was a genus of dinosaur.
- "Riojasaurus" means "lizard from Rioja" (after a province in Argentina).
- Riojasaurus was a member of the Saurischia ("lizard-hipped") order of dinosaurs. What this means, is that although Riojasaurus was not closely related to lizards, it did have similarly shaped pelvic bones.
- Riojasaurus was a Prosauropod - a member of a group of related early herbivorous (plant-eating) dinosaurs which had long necks, small heads, shorter forelimbs than hind limbs, and a thumb claw.
- Riojasaurus lived between about 225 million years ago and 219 million years ago, during the Triassic period.
- Riojasaurus lived in South America.
- Riojasaurus was a herbivore (plant-eater).
- Riojasaurus was about 33 feet (10 meters) long.
Riojasaurus Pictures and Posters
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Here are some Riojasaurus pictures and posters:
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Riojasaurus Books Here are some books from Amazon.com:
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By Source: Wikipedia
Books LLC, Reference Series Paperback (26 pages)
 | List Price: $14.14* Lowest New Price: $14.13* Lowest Used Price: $15.32* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: Fuente: Wikipedia. Páginas: 25. Capítulos: Massospondylus, Plateosaurus, Aardonyx, Riojasaurus, Lufengosaurus, Mussaurus, Thecodontosaurus, Glacialisaurus, Panphagia, Coloradisaurus, Unaysaurus, Euskelosaurus, Gyposaurus, Azendohsaurus, Efraasia, Eucnemesaurus, Yimenosaurus, Camelotia, Plateosauravus, Melanorosaurus, Sellosaurus, Yunnanosaurus, Ruehleia, Pantydraco, Massospondylidae, Jingshanosaurus, Massopoda, Lessemsaurus, Aetonyx, Pachysauriscus, Plateosauria, Plateosauridae, Pachyspondylus, Pradhania, Aliwalia, Adaphaumas, Gigantoscelus, Tawasaurus, Seitaad, Leptospondylus, Dimodosaurus, Hortalotarsus, Xixiposaurus, Agrosaurus, Fulengia, Melanorosauridae, Gresslyosaurus, Gryponyx, Thecodontosauridae, Riojasauridae, Aristosaurus, Blikanasauridae. Extracto: Massospondylus (gr. "vértebra elongada") es un género representado por una única especie de dinosaurio prosaurópodo masospondílido que vivió a principios del período Jurásico, entre 200 a 183 millones de años, desde el Hetangiano al Pliensbachiano en África. Descrita por Sir Richard Owen en 1854 a partir de restos descubiertos en Sudáfrica, siendo uno de los primeros dinosaurios en ser nombrado. Fósiles de este han sido encontrados en distintos lugares de Sudáfrica, Lesotho y Zimbabwe. Material adicional encontrado en la Formación Kayenta de Arizona , la India y Argentina han sido antiguamente asignados a este género, pero hoy se los considera distintos a Massospondylus. Massospondylus fue un típico prosaurópodo de cuello medio largo y piernas delgadas. Por un tiempo se creyó que Massospondylus era omnívoro pero ha habido nuevos descubrimientos que demuestran que era herbívoro. Este dato lo acerca más a sus descendientes. Para mejorar su digestion tragaba piedras (probado por la precencia de gastrolitos en su estómago) tal como lo hacían muchos sauropodomórfos. En cada una de sus patas delanteras poseía una garra aguda en el pulgar que fue utilizada en defensa o para recoger el alimento. Estudios recientes ... |
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| Dinosaurs Of South America, including: Argentinosaurus, Saltasaurus, Eoraptor, Irritator, Giganotosaurus, Staurikosaurus, Unaysaurus, Carnotaurus, ... Riojasaurus, Antarctosaurus, Tyrannotitan |
By Hephaestus Books
Hephaestus Books Paperback (264 pages)
 | List Price: $27.75* Lowest New Price: $19.71* Lowest Used Price: $19.45* Usually ships in 1 to 3 weeks* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book is a collaboration focused on Dinosaurs of South America. |
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| Prosauropods, including: Unaysaurus, Prosauropoda, Mussaurus, Plateosaurus, Riojasaurus, Aetonyx, Massospondylus, Lessemsaurus, Lufengosaurus, ... Coloradisaurus, Eucnemesaurus, Gyposaurus |
By Hephaestus Books
Hephaestus Books Paperback (92 pages)
 | List Price: $18.75* Lowest New Price: $11.96* Lowest Used Price: $13.36* Usually ships in 1 to 3 weeks* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book is a collaboration focused on Prosauropods.
More info: Prosauropoda or prosauropods (sg. ) were a group of early herbivorous dinosaurs that lived during the Triassic and early Jurassic periods. They were frequently the predominant herbivore in their environment, and quickly reached large size, from . All prosauropods had a long neck and small head, forelimbs shorter than the hindlimbs, and a very large thumb claw (inherited from the thecodontosaurs) for defense. Most were bipedal, although at least one large form (Riojasaurus) was quadrupedal. They were originally thought to be the ancestors of the sauropods, but are now considered a parallel lineage. |
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| Prehistoric Reptiles Of South America, including: Argentinosaurus, Saltasaurus, Eoraptor, Irritator, Giganotosaurus, Staurikosaurus, Unaysaurus, ... Herrerasaurus, Riojasaurus, Antarctosaurus |
By Hephaestus Books
Hephaestus Books Paperback (488 pages)
 | List Price: $38.75* Lowest New Price: $28.80* Lowest Used Price: $27.10* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book contains chapters focused on Prehistoric reptiles of South America, and Dinosaurs of South America. |
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By DK Publishing
DK CHILDREN Hardcover (128 pages)
 | List Price: $16.99* Lowest New Price: $9.77* Lowest Used Price: $6.95* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: From the first sea mammals to fierce dinosaurs, this inspiring reference book takes children on a fantastic journey into the prehistoric world. |
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By Llyn Hunter & Dinosaurs
Dover Publications Paperback (32 pages)
 | List Price: $3.99* Lowest New Price: $1.35* Lowest Used Price: $0.01* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description:
Illustrator Llyn Hunter has dramatically rendered the Stegosaurus, Iguanodon, Velociraptor, Triceratops, Tyrannosaurus, and 24 more prehistoric beasts as they might have appeared in their natural habitats millions of years ago. Young amateur paleontologists are provided with a list of sources for further reading, plus helpful suggestions for coloring the drawings. Introduction. Bibliography.
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Indiana University Press Hardcover (512 pages)
 | List Price: $59.95* Lowest New Price: $44.56* Lowest Used Price: $38.97* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description:
The large, quadrupedal herbivores known as sauropods were widespread around the planet from the Jurassic to the end of the Cretaceous. With the longest necks and tails of all of the dinosaurs, some sauropods were 40 meters in length and weighed upwards of 100,000 kilograms, more than 20 tons. The popular image of these lumbering giants, placidly consuming ferns has been greatly revised in recent years. New discoveries and new theories about behavior and physiology have continued to enrich the study of these remarkable beasts. This book presents 21 new studies of the sauropods. The book is organized into four parts. The first part looks at some sauropods old and new, the second at juvenile and adult specimens and ontogenetic variation within species. Part three concerns morphology and biomechanics, while part four takes up issues of biogeography. The contributors are Sebastián Apesteguía, Malcolm W. Bedell, Jr., David S. Berman, Matthew F. Bonnan, Kenneth Carpenter, Sankar Chatterjee, Rodolfo A. Coria, Fabio M. Dalla Vecchia, John Foster, Peter M. Galton, Jacques van Heerden, Takehito Ikejiri, Jean Le Loeuff, D. M. Mohabey, John S. McIntosh, J. Michael Parrish, Bruce M. Rothschild, Leonardo Salgado, Steven W. Salisbury, Allen Shaw, Kenneth Stadtman, Kent A. Stevens, Virginia Tidwell, David Trexler, Ray Wilhite, Adam M. Yates, and Zhong Zheng. |
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By Dr. Peter Dodson
Scholastic Press Hardcover (64 pages)
 | List Price: $16.95* Lowest New Price: $58.00* Lowest Used Price: $0.10* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: The vice president of the Dinosaur Society and an accomplished science illustrator combine talents to create an unusual ABC book that brings the world of dinosaurs to life and includes such favorites as Stegosaurus, Tyrannosaurus Rex, and newly discovered Xenotarsaurus. |
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By Steve Brusatte
Book Sales, Inc. Hardcover (144 pages)
 | List Price: $14.99* Lowest New Price: $34.00* Lowest Used Price: $34.00* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description:
Through a series of journal entries, kids will uncover the mysteries of the dinosaur kingdom—from the speedy and agile Coelophysis to the existence of Pangaea, the landmass of the earth some 227 million years ago when all of the continents were one. |
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VolutPress Paperback (96 pages)
| List Price: $44.00* Lowest New Price: $44.00* Lowest Used Price: $44.50* Usually ships in 24 hours* *(As of 12:29 Pacific 3 Feb 2012 More Info)
Click Here | Product Description: Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Riojasaurus (meaning "Rioja lizard") was a herbivorous dinosaur named after La Rioja Province in Argentina where it was found by José Bonaparte. It lived during the Late Triassic and grew to about 10 metres (33 ft) long. Riojasaurus is the only known riojasaurid to live in South America.Riojasaurus had a heavy body, bulky legs, and a long neck and tail. Its leg bones were dense and massive for a prosauropod. By contrast, its vertebrae were lightened by hollow cavities, and unlike most prosauropods, Riojasaurus had four instead of three. It probably moved slowly on all fours and was unable to rear up on its back legs. The nearly equal length of the fore and hindlimbs is also suggestive of an obligatorily quadrupedal gait. |
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