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

This site contains sponsored affiliate links.

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 Claw Replica DinosaurTyrannosaurus Claw Replica Dinosaur $47.65 New Listing~Toy Major 2000 Tyrannosaurus T Rex Dinosaur 7" Figure Toy Dino~New Listing~Toy Major 2000 Tyrannosaurus T Rex Dinosaur 7" Figure Toy Dino~ $4.99
New T-Rex Dinosaur 10 Inch Stuffed Animal Plush Toy Tyrannosaurus RexNew T-Rex Dinosaur 10 Inch Stuffed Animal Plush Toy Tyrannosaurus Rex $10.99 Attack of the Tyrannosaurus (Dinosaur Cove, No. 1) - Paperback - GoodAttack of the Tyrannosaurus (Dinosaur Cove, No. 1) - Paperback - Good $3.78
Tyrannosaurus "Sue" Dinosaur Prehistoric T-rex Mesozoic Model EofaunaTyrannosaurus "Sue" Dinosaur Prehistoric T-rex Mesozoic Model Eofauna $59.99 New ListingSafari Ltd T-Rex Tyrannosaurus Rex Figurine 2006 DinosaurNew ListingSafari Ltd T-Rex Tyrannosaurus Rex Figurine 2006 Dinosaur $5.99
Dinosaur / Tyrannosaurus Rex Skeleton 95 cm Wooden Base Laser EngravedDinosaur / Tyrannosaurus Rex Skeleton 95 cm Wooden Base Laser Engraved $357.40 Dinosaur Set - Nib - Free Shipping!Dinosaur Set - Nib - Free Shipping! $16.20
CafePress Tyrannosaurus Rex Dinosaur Wall Clock (1119283506)CafePress Tyrannosaurus Rex Dinosaur Wall Clock (1119283506) $29.99 Personalized Tyrannosaurus Dinosaur Metal Wall Art With LightsPersonalized Tyrannosaurus Dinosaur Metal Wall Art With Lights $48.98
Tyrannosaurus 100 Dinosaur Note Full Color Novelty 24K Gold Plated Bill Xx017Tyrannosaurus 100 Dinosaur Note Full Color Novelty 24K Gold Plated Bill Xx017 $3.95 Tyrannosaurus Dinosaur Cosplay Dinosaur Costume Air-filled Inflatable NewTyrannosaurus Dinosaur Cosplay Dinosaur Costume Air-filled Inflatable New $99.80
T Rex Dinosaur Toy, Tyrannosaurus Rex Action Figure w Movable Jaw, 11"T Rex Dinosaur Toy, Tyrannosaurus Rex Action Figure w Movable Jaw, 11" $29.99 Haolonggood 1:35 Tyrannosaurus Rex Model Dinosaur Animal Collection Decor GiftHaolonggood 1:35 Tyrannosaurus Rex Model Dinosaur Animal Collection Decor Gift $34.99
Tyrannosaurus Rex Hard ( Solid ) Plastic Toy 7" Orange Prehistoric DinosaurTyrannosaurus Rex Hard ( Solid ) Plastic Toy 7" Orange Prehistoric Dinosaur $16.72 Life Is Good Tyrannosaurus Dinosaur Rex Insulated Lunch Bag Blue NylonLife Is Good Tyrannosaurus Dinosaur Rex Insulated Lunch Bag Blue Nylon $18.17
Schleich Tyrannosaurus Rex Dinosaur Figure Articulating Jaw FigurineSchleich Tyrannosaurus Rex Dinosaur Figure Articulating Jaw Figurine $11.61 26"x19" Dinosaur Tyrannosaurus Flex Led Neon Sign Light Lamp Party Gift Décor26"x19" Dinosaur Tyrannosaurus Flex Led Neon Sign Light Lamp Party Gift Décor $199.99
Pnso 1/35 Tyrannosaurus Rex Cameron Dinosaur Model Animal Collection Gk DecorPnso 1/35 Tyrannosaurus Rex Cameron Dinosaur Model Animal Collection Gk Decor $71.24 New ListingSchleich Tyrannosaurus Rex T-Rex Dinosaur 4.5"h, 14502New ListingSchleich Tyrannosaurus Rex T-Rex Dinosaur 4.5"h, 14502 $8.00
T-Rex Inflatable Uit Tyrannosaurus Dinosaur Costume Child Kids Adult Role-PlayinT-Rex Inflatable Uit Tyrannosaurus Dinosaur Costume Child Kids Adult Role-Playin $111.68 to Tyrannosaurus (Dinosaur Lib Series) - Library Binding By Sheehan, Angela - GoodTyrannosaurus (Dinosaur Lib Series) - Library Binding By Sheehan, Angela - Good $4.08
New ListingLarge Replica Tyrannosaurus Dinosaur Skull Bones T-Rex Head Fossil Decor DisplayNew ListingLarge Replica Tyrannosaurus Dinosaur Skull Bones T-Rex Head Fossil Decor Display $125.00 2017 New Collecta Dinosaur Toy / Figure Tyrannosaurus - Hunting2017 New Collecta Dinosaur Toy / Figure Tyrannosaurus - Hunting $9.05
Dinosaur 7" T-Rex Tyrannosaurus Rex Gray Hard Plastic Great DetailDinosaur 7" T-Rex Tyrannosaurus Rex Gray Hard Plastic Great Detail $8.99 3d printed Trex, Tyrannosaurus Rex head skull skeleton model dinosaur 1:13d printed Trex, Tyrannosaurus Rex head skull skeleton model dinosaur 1:1 $5,801.34
New ListingT-Rex Hard Plastic Toy Major Trading Co Dinosaur 2005 Green Tyrannosaurus RexNew ListingT-Rex Hard Plastic Toy Major Trading Co Dinosaur 2005 Green Tyrannosaurus Rex $12.00 Tyrannosaurus Dinosaur T-Rex Green Detail Dinosaur Figurine (Sh2)Tyrannosaurus Dinosaur T-Rex Green Detail Dinosaur Figurine (Sh2) $13.49
Dinosaur Sticker, Tyrannosaurus Decal, Bumper T-Rex StickerDinosaur Sticker, Tyrannosaurus Decal, Bumper T-Rex Sticker $3.59 "Tyrannosaurus Rex" Dinosaur Round 1 oz .999 Copper Round partof Dinosaur series"Tyrannosaurus Rex" Dinosaur Round 1 oz .999 Copper Round partof Dinosaur series $2.20
New ListingAnimal Planet Tyrannosaurus Rex Action Purple Dinosaur Opening Mouth - Lot of 2New ListingAnimal Planet Tyrannosaurus Rex Action Purple Dinosaur Opening Mouth - Lot of 2 $7.00 W-Dragon Indominus Rex Tyrannosaurus Rex Dinosaur Statue Collectible DisplayW-Dragon Indominus Rex Tyrannosaurus Rex Dinosaur Statue Collectible Display $417.61
Tyrannosaurus T-Rex Skull Resin Fossil Model Dinosaur Collectibles Replica NewTyrannosaurus T-Rex Skull Resin Fossil Model Dinosaur Collectibles Replica New $27.99 Haolonggood 1/35 Tyrannosaurus Rex Figure Dinosaur Animal Model Xmas Gift ToysHaolonggood 1/35 Tyrannosaurus Rex Figure Dinosaur Animal Model Xmas Gift Toys $34.99
Giant 36 Inch T-Rex Tyrannosaurus Dinosaur Crochet Amigurumi HandmadeGiant 36 Inch T-Rex Tyrannosaurus Dinosaur Crochet Amigurumi Handmade $158.00 12" Large Tyrannosaurus Dinosaur Toy Educational Model Gift For ! V9K712" Large Tyrannosaurus Dinosaur Toy Educational Model Gift For ! V9K7 $14.57
Tyrannosaurus Rex 9" Tall Plush T-Rex Dinosaur Stuffed AnimalTyrannosaurus Rex 9" Tall Plush T-Rex Dinosaur Stuffed Animal $12.99 New ListingTemi Dinosaur Truck Tyrannosaurus Play Set CompleteNew ListingTemi Dinosaur Truck Tyrannosaurus Play Set Complete $35.00
Jurassic World Hammond Collection Tyrannosaurus Rex T Rex Baby Dinosaur NewJurassic World Hammond Collection Tyrannosaurus Rex T Rex Baby Dinosaur New $51.25 "Tyrannosaurus Rex Head" Dinosaur Round 1 oz .999 Copper Round Dinosaur series"Tyrannosaurus Rex Head" Dinosaur Round 1 oz .999 Copper Round Dinosaur series $2.20
Eofauna 1:35 Tyrannosaurus Sue Model Dinosaur Animal Collection Decor Gift ToyEofauna 1:35 Tyrannosaurus Sue Model Dinosaur Animal Collection Decor Gift Toy $52.24 Lego Jurassic World Fallen Kingdom T-Rex Dinosaur 04 Tyrannosaurus Rex Real LegoLego Jurassic World Fallen Kingdom T-Rex Dinosaur 04 Tyrannosaurus Rex Real Lego $37.99
3d printed Trex, Tyrannosaurus Rex head skull skeleton model dinosaur x2 size3d printed Trex, Tyrannosaurus Rex head skull skeleton model dinosaur x2 size $10,601.34 New ListingJurassic World Mattel T-Rex Plush Tyrannosaurus Rex Dinosaur Jurassic ParkNew ListingJurassic World Mattel T-Rex Plush Tyrannosaurus Rex Dinosaur Jurassic Park $9.78
Tyrannosaurus Dinosaur Cast Iron Statue T-Rex Jurassic SculptureTyrannosaurus Dinosaur Cast Iron Statue T-Rex Jurassic Sculpture $32.99 3d printed T-Rex, Tyrannosaurus Rex baby skeleton model dinosaur 1:13d printed T-Rex, Tyrannosaurus Rex baby skeleton model dinosaur 1:1 $4,927.33
$29.75 Dinosaur Model T-Rex Spinosaurus Mosasaurus Velociraptor Animal Collection DecorDinosaur Model T-Rex Spinosaurus Mosasaurus Velociraptor Animal Collection Decor $10.99 to
Tyrannosaurus Rex Dinosaur Figure Green T-Rex 7” Dino Hard HeavyTyrannosaurus Rex Dinosaur Figure Green T-Rex 7” Dino Hard Heavy $7.50 Jurassic World Tyrannosaurus T Rex Dinosaur Toy with Sound Hunt Chomp 20" longJurassic World Tyrannosaurus T Rex Dinosaur Toy with Sound Hunt Chomp 20" long $33.99
Pnso 48Pc Mini Dinosaur Model Tyrannosaurus Triceratops Collectio Toy GiftPnso 48Pc Mini Dinosaur Model Tyrannosaurus Triceratops Collectio Toy Gift $7.99 New ListingT Rex Toy Dinosaur Wm-H 20240301 Light Up Eyes Roar Sound Growl TyrannosaurusNew ListingT Rex Toy Dinosaur Wm-H 20240301 Light Up Eyes Roar Sound Growl Tyrannosaurus $12.00
CollectA 88697 Juvenile Tyrannosaurus Rex Dinosaur Model Toy - NipCollectA 88697 Juvenile Tyrannosaurus Rex Dinosaur Model Toy - Nip $7.99 Tyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur MiniatureTyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur Miniature $34.79
New ListingTyrannosaurus rex Stegosaurus Dilophosaurus 3pcs Dinosaur Figure T-Rex MonsterNew ListingTyrannosaurus rex Stegosaurus Dilophosaurus 3pcs Dinosaur Figure T-Rex Monster $36.00 Carved pyrite Tyrannosaurus rex dinosaur 4” Inch Tall Gem Crystal! Wow PieceCarved pyrite Tyrannosaurus rex dinosaur 4” Inch Tall Gem Crystal! Wow Piece $69.95
Tyrannosaurus Rex Corpse Dinosaur Toy Model Figure by CollectA 88743 Brand NewTyrannosaurus Rex Corpse Dinosaur Toy Model Figure by CollectA 88743 Brand New $18.56 New ListingFramed Tyrannosaurus Rex Trex Fossil Dinosaur Tooth Fragment Lot! One per Order!New ListingFramed Tyrannosaurus Rex Trex Fossil Dinosaur Tooth Fragment Lot! One per Order! $54.99
Tyrannosaurus Spex - Licensed Original Dinosaur Artwork, Refrigerator Magnet.Tyrannosaurus Spex - Licensed Original Dinosaur Artwork, Refrigerator Magnet. $10.49 3D Tyrannosaurus Dinosaur Toilet Paper Roll Holder. Wall-mounted Bath Decor.3D Tyrannosaurus Dinosaur Toilet Paper Roll Holder. Wall-mounted Bath Decor. $21.25
Tyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur MiniatureTyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur Miniature $15.79 New ListingJurassic Park 3 Dinosaur Toy Tyrannosaurus Rex Exclusive Jungle Camouflage 2001New ListingJurassic Park 3 Dinosaur Toy Tyrannosaurus Rex Exclusive Jungle Camouflage 2001 $12.00
New ListingTyrannosaurus Dinosaur Action Figure Dino Valley, Light, Sound Works! 8” InchesNew ListingTyrannosaurus Dinosaur Action Figure Dino Valley, Light, Sound Works! 8” Inches $11.99 Tyrannosaurus T. Rex * Collectible Dinosaur * Jfk Half Dollar Us Colorized CoinTyrannosaurus T. Rex * Collectible Dinosaur * Jfk Half Dollar Us Colorized Coin
Click to see more Tyrannosaurus Rex items at www.ebay.com
Prices current as of last update, 05/11/25 6:01am.

Home Contact Resources Exchange Links eBay