Closeup of jawsCloseup of arm
Discover great deals on the many hard to find and one of a kind items available only on ebay!

Tyrannosaurus Rex

Tyrannosaurus rex (translates as "King of Tyrannous Reptiles" or literally "tyrant lizard king"), also known colloquially as T-Rex and The King of the Dinosaurs, was a giant carnivorous theropod dinosaur from the Upper Maastrichtian, the last stage of the Cretaceous period, 65–66 million years ago. more...

HomeHome
AmphibianAmphibian
ArthropodArthropod
BirdBird
CatCat
DinosaurDinosaur
AllosaurusAllosaurus
ApatosaurusApatosaurus
ArchaeopteryxArchaeopteryx
BrachiosaurusBrachiosaurus
BrontosaurusBrontosaurus
DiplodocusDiplodocus
GigantosaurusGigantosaurus
HadrosaurusHadrosaurus
PterodactylPterodactyl
StegosaurusStegosaurus
TriceratopsTriceratops
Tyrannosaurus Rex  Tyrannosaurus Rex
VelociraptorVelociraptor
DogDog
FishFish
MammalMammal
MythologicalMythological
ReptileReptile


Its fossil remains are relatively rare; as of 2005 only 30 specimens had been found, including three complete skulls. The first specimens found played an important role in the Bone Wars. T. rex is the best known carnivorous dinosaur, particularly because it was regarded as the largest to have ever existed for a long time. While evidence indicates that Giganotosaurus was probably larger, T. rex will very likely remain a subject of ongoing scientific research and popular culture.

Discovery and Classification

The locations of all of the discoveries are restricted to North America. The first specimen (a partial vertebra) was found by Edward Cope in 1892 and was described as Manospondylus gigas. It was assigned to Tyrannosaurus rex in 1912 by Henry Osborn. Barnum Brown, assistant curator of the American Museum of Natural History, found the second T. rex skeleton in Wyoming in 1900. This specimen was originally named Dynamosaurus imperiosus in the same paper in which Tyrannosaurus rex was described. Were it not for page order, Dynamosaurus would have become the official name. The original "Dynamosaurus" material resides in the collections of the Natural History Museum, London.

In 2000, there was a controversy regarding its name because the dinosaur bones unearthed in South Dakota in June that year may have been part of a fossil known as Manospondylus gigas. According to the rules of International Commission on Zoological Nomenclature, the system that gives animals their Latin designation, Cope's 1892 name—Manospondylus gigas—should have priority because his discovery came first. However, in the ICZN 4th edition, which took effect on 1 January 2000, Chapter 8, Article 35.5 stated that any such discovery made after 1999 does not cause the older name to replace the newer, prevailing name. Therefore, regardless of the result of the discovery, the "Tyrannosaurus rex" name is still used by biologists today.

Characteristics

Up to 50.4 feet and 20.4 feet in length and 4 tons in weight, T. rex was one of the largest carnivores of all time. Compared to other carnivorous dinosaurs, the skull of Tyrannosaurus is heavily modified. Many of the bones are fused together, preventing movement between them. The bones themselves are much more massive than is typical of a theropod, and the serrated teeth, far from being bladelike, are massive and oval in cross-section. Heavy wear and the bite marks found on bones of other dinosaurs indicate that these teeth could bite into solid bone. The teeth are often worn or broken at the tips from heavy use but, unlike mammals, were continually grown and shed throughout the life of the animal. Compared to other giant carnivorous dinosaurs such as Allosaurus, Tyrannosaurus appears to have had a sizeable brain, but was probably not particularly intelligent by mammalian standards.

The neck was short and musclular, to support the head. The arms of T. rex were very small, perhaps to make up for the weight of its enormous head, but were very sturdy. They may have been used for grasping during sex or as aids in standing. The legs were relatively long and slender for an animal of its size. To compensate for its immense bulk, the interior of many bones were hollow. This considerably reduced the weight of the skeleton while maintaining much of the strength of the bones.

Biology

As with all dinosaurs, much of Tyrannosaurus' biology—its lifespan, breeding strategy, coloration, ecology and physiology—remains unknown. A site in Alberta has at least nine Albertosaurus sarcophagus (a closely related animal) individuals of different ages preserved together, but whether these animals lived together or simply died together is unclear.

Feathers

It has been proposed that T. rex and other theropod dinosaurs may have had feathers. Small coelurosaurs (a closely related dinosaur group) from the Yixian Formation in Liaoning, China, have been discovered with either pennaceous feathers or fur-like "protofeathers", which suggest the possibility that tyrannosaurids may also have borne feathers as well. In 2004, the primitive tyrannosaurid Dilong paradoxus was discovered from the same formation with preserved long tail plumes. However, skin impressions from adult tyrannosaurs in Alberta and Mongolia appear to show the pebbly scales typical of other dinosaurs.

Evidence for Scavenging

Most debate about T. rex centers on its feeding patterns and locomotion. One scientist, noted hadrosaur expert Jack Horner, claims that T. rex was exclusively a scavenger, and did not engage in active hunting at all. Horner has only presented this in an official scientific context once, mainly discussing it in his books and in the media. His hypothesis is based on the following: T. rex have large (relative to their brain size) olfactory bulbs and olfactory nerves. These suggest a highly developed sense of smell, allegedly used to sniff out carcasses over great distances, like modern vultures. Their teeth could crack bone; a skill perhaps needed most when last to a kill and in need of extracting as much food (marrow) as possible from a carcass's least nutritious parts. Since at least some T. rex prey animals could move quickly, evidence that T. rex walked instead of ran could indicate that it was a scavenger (see more on this below). All scientists who have published on the subject since insist that T. rex was both a predator and a scavenger, taking whatever meat it could get depending on the opportunity it was presented with.

Read more at Wikipedia.org


[List your site here Free!]

Tyrannosaurus Rex Dinosaur 1988 The Carnegie Safari Ltd Figure Toy Statue T-RexTyrannosaurus Rex Dinosaur 1988 The Carnegie Safari Ltd Figure Toy Statue T-Rex $13.49 Rebor Tyrannosaurus Rex T-Rex Killer Queen 1/35 DinosaurRebor Tyrannosaurus Rex T-Rex Killer Queen 1/35 Dinosaur $39.99
Tyrannosaurus T- Rex Snap Squad - Jurassic World Fallen Kingdom Dinosaur (Brown)Tyrannosaurus T- Rex Snap Squad - Jurassic World Fallen Kingdom Dinosaur (Brown) $12.99 1997 ReSaurus Carnage Tyrannosaurus Rex Dinosaur Action Figure Toy In Box1997 ReSaurus Carnage Tyrannosaurus Rex Dinosaur Action Figure Toy In Box $99.95
New Battat Tyrannosaurus Rex Dinosaur Dan LoRusso Collection 10 Inch Figure NewNew Battat Tyrannosaurus Rex Dinosaur Dan LoRusso Collection 10 Inch Figure New $14.99 2002 Schleich Germany Tyrannosaurus Rex T-Rex Prehistoric Dinosaur Figure2002 Schleich Germany Tyrannosaurus Rex T-Rex Prehistoric Dinosaur Figure $10.00
Tyrannosaurus Rex Baby Hatchling Dinosaur Nest FigureTyrannosaurus Rex Baby Hatchling Dinosaur Nest Figure $5.00 Schleich Dinosaur Red Tyrannosaurus Rex Collectible 10" Collectible Figure NwtSchleich Dinosaur Red Tyrannosaurus Rex Collectible 10" Collectible Figure Nwt $23.99
Tyrannosaurus Rex Dinosaur Head Gloves Toys Halloween/Christmas Gift For Boy KidTyrannosaurus Rex Dinosaur Head Gloves Toys Halloween/Christmas Gift For Boy Kid $11.98 Papo The Dinosaur Figure, Tyrannosaurus (no box)Papo The Dinosaur Figure, Tyrannosaurus (no box) $16.50
Tyco Smithsonian Institution Tyrannosaurus 1:24 Dinosaur Life-Like Action FigureTyco Smithsonian Institution Tyrannosaurus 1:24 Dinosaur Life-Like Action Figure $79.95 2002 Schleich Tyrannosaurus Rex T Rex Dinosaur 6.5 inch Figure2002 Schleich Tyrannosaurus Rex T Rex Dinosaur 6.5 inch Figure $9.99
Srg Company~Vintage Bronze Cast Metal Dinosaur T- Rex Tyrannosaurus~Mint/UnusedSrg Company~Vintage Bronze Cast Metal Dinosaur T- Rex Tyrannosaurus~Mint/Unused $19.50 Pewter Tyrannosaurus T Rex Dinosaur Metal Silver Jurassic Park Figurine Statue HPewter Tyrannosaurus T Rex Dinosaur Metal Silver Jurassic Park Figurine Statue H $8.95
Jurassic World Battle Damage Dinosaurs Lot of 5 New You Pick Jurassic ParkJurassic World Battle Damage Dinosaurs Lot of 5 New You Pick Jurassic Park $9.99 to Vintage 1988 Dinosaur Figure T Rex tyrannosaurus trex Playskool ToyVintage 1988 Dinosaur Figure T Rex tyrannosaurus trex Playskool Toy $7.00
New Listing1993 Jurassic Park Young Tyrannosaurus Rex T-Rex Jp06 Dinosaur Toy By KennerNew Listing1993 Jurassic Park Young Tyrannosaurus Rex T-Rex Jp06 Dinosaur Toy By Kenner $35.00 Tyrannosaurus Rex Skeleton Dinosaur T-Rex Animal Model Toys Super Collector GiftTyrannosaurus Rex Skeleton Dinosaur T-Rex Animal Model Toys Super Collector Gift $18.69
Pewter Tyrannosaurus T-Rex Dinosaur Reptile Jurassic Park Metal Silver FigurinePewter Tyrannosaurus T-Rex Dinosaur Reptile Jurassic Park Metal Silver Figurine $8.95 Hagen Renaker Dinosaur Tyrannosaurus Figurine Miniature New Free Shipping 00967Hagen Renaker Dinosaur Tyrannosaurus Figurine Miniature New Free Shipping 00967 $10.70
Jurrasic World Tyrannosaurus T Rex Action Figure Dinosaur Jaw Snapping 2015Jurrasic World Tyrannosaurus T Rex Action Figure Dinosaur Jaw Snapping 2015 $9.00 Scary Walking Dinosaur Tyrannosaurus Rex Toy Figure For KidsScary Walking Dinosaur Tyrannosaurus Rex Toy Figure For Kids $23.98
Mattel Tyrannosaurus T- Rex Snap Squad - Jurassic World dinosaurMattel Tyrannosaurus T- Rex Snap Squad - Jurassic World dinosaur $11.86 Jurassic Theme Dinosaur Hatchling Egg T-Rex Figurine Tyrannosaurus Desk StatueJurassic Theme Dinosaur Hatchling Egg T-Rex Figurine Tyrannosaurus Desk Statue $19.99
Tootsietoy Green Tyrannosaurus Vintage Plastic Prehistoric Hollow Ajax DinosaurTootsietoy Green Tyrannosaurus Vintage Plastic Prehistoric Hollow Ajax Dinosaur $6.99 Schleich Dinosaur Lot 2 Tyrannosaurus 3 Gigantosaurus 1 Velociraptor FiguresSchleich Dinosaur Lot 2 Tyrannosaurus 3 Gigantosaurus 1 Velociraptor Figures $79.99
Tmnt Dinosaurs Orange Trippy Tyrannosaurus, Purple Silly TyrannosaurusTmnt Dinosaurs Orange Trippy Tyrannosaurus, Purple Silly Tyrannosaurus $45.00 11" Large Tyrannosaurus Rex Dinosaur Toy Model Top Birthday Gift For Kids T-Rex11" Large Tyrannosaurus Rex Dinosaur Toy Model Top Birthday Gift For Kids T-Rex $13.99
Jurassic World Park Chomping Tyrannosaurus T-Rex 16" Dinosaur Figure 2015Jurassic World Park Chomping Tyrannosaurus T-Rex 16" Dinosaur Figure 2015 $16.99 Jurassic World Dino Rivals Bite N Fight Tyrannosaurus Rex T-Rex Dinosaur FigureJurassic World Dino Rivals Bite N Fight Tyrannosaurus Rex T-Rex Dinosaur Figure $32.99
Vintage 50s Marx Rare Silver Tyrannosaurus Dinosaur Plastic Prehistoric PlaysetVintage 50s Marx Rare Silver Tyrannosaurus Dinosaur Plastic Prehistoric Playset $17.95 Jurassic World Primal Attack 6" Tyrannosaurus Rex Dinosaur Figure Jurassic ParkJurassic World Primal Attack 6" Tyrannosaurus Rex Dinosaur Figure Jurassic Park $17.95
Rare Retired Battat Boston Museum of Science Tyrannosaurus Dinosaur Figure ToyRare Retired Battat Boston Museum of Science Tyrannosaurus Dinosaur Figure Toy $50.00 Jurassic World Tyrannosaurus T-Rex Battle Damage Roarin Super Colossal DinosaurJurassic World Tyrannosaurus T-Rex Battle Damage Roarin Super Colossal Dinosaur $64.99
Jurassic World Bite 'n Fight Tyrannosaurus Rex Chomping Dinosaur Mattel LotJurassic World Bite 'n Fight Tyrannosaurus Rex Chomping Dinosaur Mattel Lot $18.99 Rebor 1/35 Tyrannosaurus T-Rex Killer Queen Dinosaur Model Brown Jurassic ParkRebor 1/35 Tyrannosaurus T-Rex Killer Queen Dinosaur Model Brown Jurassic Park $95.00
2002 Schleich Germany Tyrannosaurus Rex T-Rex Dinosaur Figure2002 Schleich Germany Tyrannosaurus Rex T-Rex Dinosaur Figure $7.99 Vintage Smithsonian Dinosaur Tyrannosaurus T-Rex 3Lb Green Fluorite FigurineVintage Smithsonian Dinosaur Tyrannosaurus T-Rex 3Lb Green Fluorite Figurine $58.00
$39.99 Tyrannosaurus Mask Jurassic Park World New Dinosaur Dino Legacy CollectionTyrannosaurus Mask Jurassic Park World New Dinosaur Dino Legacy Collection $34.97
T-Rex Tyrannosaurus Dinosaur Faux Carved Wood Look Figurine 4”H 6"L Resin New!T-Rex Tyrannosaurus Dinosaur Faux Carved Wood Look Figurine 4”H 6"L Resin New! $20.00 Schleich Rainbow Tyrannosaurus Rex Dinosaur Figure w/ Moveable Jaw # D-73527Schleich Rainbow Tyrannosaurus Rex Dinosaur Figure w/ Moveable Jaw # D-73527 $32.95
New ListingRare Tmnt Cave Turtle Don Dino Trippy Tyrannosaurus Ninja Turtle DinosaurNew ListingRare Tmnt Cave Turtle Don Dino Trippy Tyrannosaurus Ninja Turtle Dinosaur $34.99 New ListingRebor Tyrannosaurus Rex T-Rex Killer Queen Jungle Pvc 1/35 Dinosaur Museum ModelNew ListingRebor Tyrannosaurus Rex T-Rex Killer Queen Jungle Pvc 1/35 Dinosaur Museum Model $59.99
Vintage 50/60s Marx Slender Tyrannosaurus Dinosaur Plastic Prehistoric Playset 2Vintage 50/60s Marx Slender Tyrannosaurus Dinosaur Plastic Prehistoric Playset 2 $19.95 Jurassic World Snap Squad Tyrannosaurus Dinosaur FigureJurassic World Snap Squad Tyrannosaurus Dinosaur Figure $13.99
Click to see more Tyrannosaurus Rex items at www.ebay.com
Prices current as of last update, 09/20/20 6:21am.

Home Contact Resources Exchange Links eBay