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 Rex Dinosaur Figure Green T-Rex 7” Dino Hard HeavyTyrannosaurus Rex Dinosaur Figure Green T-Rex 7” Dino Hard Heavy $7.50 Tyrannosaurus (Dinosaur Lib Series) - Library Binding By Sheehan, Angela - GoodTyrannosaurus (Dinosaur Lib Series) - Library Binding By Sheehan, Angela - Good $3.80
New Listing2013 New Collecta Dinosaur Toy / Figure Tyrannosaurus Rex GreenNew Listing2013 New Collecta Dinosaur Toy / Figure Tyrannosaurus Rex Green $9.05 2 Inch Tyrannosaurus rex Dinosaur Tooth Necklace (replica 164)2 Inch Tyrannosaurus rex Dinosaur Tooth Necklace (replica 164) $12.00
New Listing2006 Toy Major Trading Co Tyrannosaurus Rex T-Rex Dinosaur Solid Heavy Pvc 6”New Listing2006 Toy Major Trading Co Tyrannosaurus Rex T-Rex Dinosaur Solid Heavy Pvc 6” $9.00 New ListingVintage 1993 Kenner Jurassic Park T-Rex Jp09 Tyrannosaurus Dinosaur Works! T-RexNew ListingVintage 1993 Kenner Jurassic Park T-Rex Jp09 Tyrannosaurus Dinosaur Works! T-Rex $95.99
New ListingDor Mei Dinosaur T Rex Tyrannosaurus Rex Hong Kong VintageNew ListingDor Mei Dinosaur T Rex Tyrannosaurus Rex Hong Kong Vintage $24.99 Prime1Studio 1/38 Pcfjp-05 Jurassic Park Tyrannosaurus T-Rex Pvc Dinosaur StatuePrime1Studio 1/38 Pcfjp-05 Jurassic Park Tyrannosaurus T-Rex Pvc Dinosaur Statue $199.50
Ty Beanie Baby - Toothy the Tyrannosaurus Rex Dinosaur 6" New Mwmts Stuffed ToyTy Beanie Baby - Toothy the Tyrannosaurus Rex Dinosaur 6" New Mwmts Stuffed Toy $17.89 Bullyland Mini T-Rex Tyrannosaurus Dinosaur Figure 61314 NewBullyland Mini T-Rex Tyrannosaurus Dinosaur Figure 61314 New $10.99
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 2017 New Collecta Dinosaur Toy / Figure Tyrannosaurus - Hunting2017 New Collecta Dinosaur Toy / Figure Tyrannosaurus - Hunting $9.05
Dinosaur Sticker, Tyrannosaurus Decal, Bumper T-Rex StickerDinosaur Sticker, Tyrannosaurus Decal, Bumper T-Rex Sticker $3.59 Brass Tyrannosaurus Rex Figurine, 2" Vintage Gold Color Dinosaur Figurine, IndiaBrass Tyrannosaurus Rex Figurine, 2" Vintage Gold Color Dinosaur Figurine, India $13.99
Tyrannosaurus Rex Toy Dinosaur 6"Tyrannosaurus Rex Toy Dinosaur 6" $6.99 Tyrannosaurus Rex Dinosaur Clear Stamps & Dies Set By Recollections 535936 NewTyrannosaurus Rex Dinosaur Clear Stamps & Dies Set By Recollections 535936 New $2.25
New ListingCollectA Prehistoric Life Tyrannosaurus Rex Toy Dinosaur Figure - AuthenticNew ListingCollectA Prehistoric Life Tyrannosaurus Rex Toy Dinosaur Figure - Authentic $20.93 Large Prehistoric Jurassic King Dinosaur Tyrannosaurus Rex Wall Decor 13"H T-RexLarge Prehistoric Jurassic King Dinosaur Tyrannosaurus Rex Wall Decor 13"H T-Rex $87.99
New ListingZeckos Tyrannosaurus Rex Dinosaur Head Fossil Statue SmallNew ListingZeckos Tyrannosaurus Rex Dinosaur Head Fossil Statue Small $43.99 Animal Model T Rex Tyrannosaurus Rex Skeleton Dinosaur Toy Collector Decor GiftAnimal Model T Rex Tyrannosaurus Rex Skeleton Dinosaur Toy Collector Decor Gift $59.99
"Tyrannosaurus Rex" Dinosaur Round 1 oz .999 Copper Round partof Dinosaur series"Tyrannosaurus Rex" Dinosaur Round 1 oz .999 Copper Round partof Dinosaur series $2.15 New ListingLarge Tyrannosaurus Dinosaur Figure Soft Plastic T-Rex Toys R Us 20”Long 12”TallNew ListingLarge Tyrannosaurus Dinosaur Figure Soft Plastic T-Rex Toys R Us 20”Long 12”Tall $19.74
New Listing Dinosaur Toys Tyrannosaurus Rex and Spinosaurus Dinosaur World ActionNew Listing Dinosaur Toys Tyrannosaurus Rex and Spinosaurus Dinosaur World Action $38.56 New Listing2012 New Collecta Dinosaur Toy / Figure Tyrannosaurus RexNew Listing2012 New Collecta Dinosaur Toy / Figure Tyrannosaurus Rex $9.05
Showanna 1/35 Tyrannosaurus Rex Scotty Model History Museum Series Dinosaur GiftShowanna 1/35 Tyrannosaurus Rex Scotty Model History Museum Series Dinosaur Gift $109.99 Dinosaur Board Books: Tyrannosaurus Rex (Dinosaur Board Books) By Dk - GoodDinosaur Board Books: Tyrannosaurus Rex (Dinosaur Board Books) By Dk - Good $6.03
Rebor 1:35 Tyrannosaurus Rex “Kiss” Island Model Collection Dinosaur Animal GiftRebor 1:35 Tyrannosaurus Rex “Kiss” Island Model Collection Dinosaur Animal Gift $85.49 12 Inch Long Tyrannosaurus Rex Tooth Replica Fossil T-Rex Dinosaur Relic Fang12 Inch Long Tyrannosaurus Rex Tooth Replica Fossil T-Rex Dinosaur Relic Fang $74.95
Dinosaur Patch Iron-on Applique Animal Badge Tyrannosaurus Raptor StegosaurusDinosaur Patch Iron-on Applique Animal Badge Tyrannosaurus Raptor Stegosaurus $4.00 Tyrannosaurus Rex dinosaur; toy/replica/Carnegie/Trex /Retired/400101Tyrannosaurus Rex dinosaur; toy/replica/Carnegie/Trex /Retired/400101 $39.99
Jurassic World Tyrannosaurus Rex Dinosaur Action FigureJurassic World Tyrannosaurus Rex Dinosaur Action Figure $9.00 Plastic Toy T-Rex Tyrannosaurus dinosaur 12" figure A5Plastic Toy T-Rex Tyrannosaurus dinosaur 12" figure A5 $11.25
Bandai Imaginary Skeleton Tyrannosaurus T-Rex 1/32 Scale Educational Model KitBandai Imaginary Skeleton Tyrannosaurus T-Rex 1/32 Scale Educational Model Kit $38.95 New Listing Tyrannosaurus Rex Dinosaur 6" Toy for Ages 3 and UpNew Listing Tyrannosaurus Rex Dinosaur 6" Toy for Ages 3 and Up $26.92
Tyrannosaurus rex, T. Rex, Dinosaur, ~ Plastic Replica 3" F1862-B4Tyrannosaurus rex, T. Rex, Dinosaur, ~ Plastic Replica 3" F1862-B4 $3.79 New ListingJurassic World Extreme Damage Tyrannosaurus Rex Action Figure Battle-Ready T-RexNew ListingJurassic World Extreme Damage Tyrannosaurus Rex Action Figure Battle-Ready T-Rex $19.99
Tyrannosaurus "Sue" Dinosaur Prehistoric T-rex Mesozoic Model EofaunaTyrannosaurus "Sue" Dinosaur Prehistoric T-rex Mesozoic Model Eofauna $59.99 Tyrannosaurus Rex T Rex Fun Dinosaur Decal Window Wall Laptop Choose Size ColorTyrannosaurus Rex T Rex Fun Dinosaur Decal Window Wall Laptop Choose Size Color $3.20
Tyrannosaurus Rex T-Rex Dinosaur 1oz Copper Round Coin Lost World CollectionTyrannosaurus Rex T-Rex Dinosaur 1oz Copper Round Coin Lost World Collection $6.60 W-Dragon Indominus Rex Tyrannosaurus Rex Dinosaur Statue Collectible DisplayW-Dragon Indominus Rex Tyrannosaurus Rex Dinosaur Statue Collectible Display $417.61
Tyrannosaurus Patch Iron-on Applique Dinosaur Badge Prehistoric Raptor ExtinctTyrannosaurus Patch Iron-on Applique Dinosaur Badge Prehistoric Raptor Extinct $4.00 Pnso 51 Tarbosaurus Chuanzi Model Tyrannosaurus Dinosaur Animal Collection DecorPnso 51 Tarbosaurus Chuanzi Model Tyrannosaurus Dinosaur Animal Collection Decor $40.84
Haolonggood 1:35 Tyrannosaurus Rex Model Dinosaur Animal Collection Decor GiftHaolonggood 1:35 Tyrannosaurus Rex Model Dinosaur Animal Collection Decor Gift $34.99 8 Inch Long Tyrannosaurus Rex Tooth Replica Fossil T-Rex Dinosaur Reproduction8 Inch Long Tyrannosaurus Rex Tooth Replica Fossil T-Rex Dinosaur Reproduction $32.95
New Listing2011 13" Toys 'R" Us Tyrannosaurus Brown T-Rex 20" Long Rubber Soft Dinosaur ToyNew Listing2011 13" Toys 'R" Us Tyrannosaurus Brown T-Rex 20" Long Rubber Soft Dinosaur Toy $14.99 New ListingBlip Toys T Rex Tyrannosaurus Rex Dinosaur Figure 2019 ~ 4"New ListingBlip Toys T Rex Tyrannosaurus Rex Dinosaur Figure 2019 ~ 4" $9.99
Plastic Tyrannosaurus Dinosaur Figure 8" Long 2008Plastic Tyrannosaurus Dinosaur Figure 8" Long 2008 $9.00 T-Rex Tyrannosaurus Dinosaur 1 oz Pure Copper Round Collectible Coin in CapsuleT-Rex Tyrannosaurus Dinosaur 1 oz Pure Copper Round Collectible Coin in Capsule $8.99
725 Pc. T-Rex Build & Play Set. Mechanical, Ages 10 and up New in Box725 Pc. T-Rex Build & Play Set. Mechanical, Ages 10 and up New in Box $38.88 In Hand! Jurassic World Rebirth Lab Lockdown Tyrannosaurus Rex - 3 PackIn Hand! Jurassic World Rebirth Lab Lockdown Tyrannosaurus Rex - 3 Pack $77.00
Tyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur MiniatureTyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur Miniature $35.79 Tyrannosaurus (Dinosaur Lib Series) - Library Binding - Very GoodTyrannosaurus (Dinosaur Lib Series) - Library Binding - Very Good $3.80
New ListingDinosaur Toys T Rex 2011 Tyrannosaurus Rex 2011 2112A Soft RubberNew ListingDinosaur Toys T Rex 2011 Tyrannosaurus Rex 2011 2112A Soft Rubber $30.00 New Listing Tyrannosaurus Rex Figurine - Detailed 7" Dinosaur Figure - Educational ToyNew Listing Tyrannosaurus Rex Figurine - Detailed 7" Dinosaur Figure - Educational Toy $18.97
New T-Rex Dinosaur 12 Inch Stuffed Animal Plush Toy Tyrannosaurus RexNew T-Rex Dinosaur 12 Inch Stuffed Animal Plush Toy Tyrannosaurus Rex $12.95 Bandai Limex Tyrannosaurus Skeleton Dinosaur Model Kit Usa SellerBandai Limex Tyrannosaurus Skeleton Dinosaur Model Kit Usa Seller $13.95
Dinosaur Figures ( Gachapon from Japan )Dinosaur Figures ( Gachapon from Japan ) $39.99 to New ListingVintage 1985 Tyrannosaurus Rex T-Rex Dinosaur Figure Plastic ToyNew ListingVintage 1985 Tyrannosaurus Rex T-Rex Dinosaur Figure Plastic Toy $10.00
Cute Cartoon Dinosaur Tyrannosaurus Rex Silicone Strap Children Watch Green GiftCute Cartoon Dinosaur Tyrannosaurus Rex Silicone Strap Children Watch Green Gift $23.73 New ListingT-Rex Tyrannosaurus Rex Dinosaur Green Toys R Us 2011New ListingT-Rex Tyrannosaurus Rex Dinosaur Green Toys R Us 2011 $19.99
Tyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur MiniatureTyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur Miniature $15.99 New Listing Dinosaurs - 11", T Rex Dinosaur Toy - Tyrannosaurus Rex Action Figure withNew Listing Dinosaurs - 11", T Rex Dinosaur Toy - Tyrannosaurus Rex Action Figure with $31.50
Ecoey dinosaur archaeological excavation toy - Delux Edition - Tyrannosaurus rexEcoey dinosaur archaeological excavation toy - Delux Edition - Tyrannosaurus rex $29.99 New Listing Small Tyrannosaurus Rex Dinosaur with Moveable Jaw, 8 Inches Length Baby RexNew Listing Small Tyrannosaurus Rex Dinosaur with Moveable Jaw, 8 Inches Length Baby Rex $17.07
CollectA 88697 Juvenile Tyrannosaurus Rex Dinosaur Model Toy - NipCollectA 88697 Juvenile Tyrannosaurus Rex Dinosaur Model Toy - Nip $7.99 Tyrannosaurus Rex Toy, Realistic T-Rex Dinosaur with Moveable Jaw, Dino Toy F.Tyrannosaurus Rex Toy, Realistic T-Rex Dinosaur with Moveable Jaw, Dino Toy F. $24.29
Mochi Puni Orange T-Rex Tyrannosaurus Dinosaur Plush Soft Japan Gold FeetMochi Puni Orange T-Rex Tyrannosaurus Dinosaur Plush Soft Japan Gold Feet $18.74 Tyrannosaurus Rex T Rex Tribal Dinosaur Decal Window Laptop Choose Size ColorTyrannosaurus Rex T Rex Tribal Dinosaur Decal Window Laptop Choose Size Color $3.20
Framed Tyrannosaurus Rex Trex Fossil Dinosaur Tooth Fragment Lot! One per Order!Framed Tyrannosaurus Rex Trex Fossil Dinosaur Tooth Fragment Lot! One per Order! $54.99
Click to see more Tyrannosaurus Rex items at www.ebay.com
Prices current as of last update, 06/01/25 9:21am.

Home Contact Resources Exchange Links eBay