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!]

Jurassic Park Tyrannosaurus Rex~ Dinosaur Figure Toy~Roars~ Stomp & EscapeJurassic Park Tyrannosaurus Rex~ Dinosaur Figure Toy~Roars~ Stomp & Escape $17.95 New Jurassic World Tyrannosaurus Rex Skull Resin Replica - Trex Dinosaur HeadNew Jurassic World Tyrannosaurus Rex Skull Resin Replica - Trex Dinosaur Head $52.99
Papo Green Running Tyrannosaurus Rex Dinosaur Figure NwtPapo Green Running Tyrannosaurus Rex Dinosaur Figure Nwt $31.49 Pair T-Rex Steel Screw Fit Tunnels Plugs Gauges Tyrannosaurus Rex DinosaurPair T-Rex Steel Screw Fit Tunnels Plugs Gauges Tyrannosaurus Rex Dinosaur $11.95 to
New ListingJurassic Park Tyrannosaurus Rex Dinosaur Model Kit 1993 Lindberg Vintage SealedNew ListingJurassic Park Tyrannosaurus Rex Dinosaur Model Kit 1993 Lindberg Vintage Sealed $34.99 Amazing Detail Tyrannosaurus T Rex Kid Galaxy Poseable Dino Dinosaur Toy FigureAmazing Detail Tyrannosaurus T Rex Kid Galaxy Poseable Dino Dinosaur Toy Figure $9.95
13.4' Dinosaur Figure Collector Tyrannosaurus Rex Model T-Rex Gift Animals Toy13.4' Dinosaur Figure Collector Tyrannosaurus Rex Model T-Rex Gift Animals Toy $22.99 Tyrannosaurus T-rex Feathered Dinosaur Safari Prehistoric Planet Dino Dana 2022Tyrannosaurus T-rex Feathered Dinosaur Safari Prehistoric Planet Dino Dana 2022 $49.99
1993 Tmnt Cave Turtle Don Dino Trippy Tyrannosaurus Ninja Turtle Dinosaur only1993 Tmnt Cave Turtle Don Dino Trippy Tyrannosaurus Ninja Turtle Dinosaur only $24.99 New Listinglot 106 Jurassic park dinosaur Jurassic World Tyrannosaurus Rex Juvenile ToyNew Listinglot 106 Jurassic park dinosaur Jurassic World Tyrannosaurus Rex Juvenile Toy $10.00
Tyrannosaur Dinosaur Tooth Tip Tyrannosaurus Rex or Nanotyrannus .79 Inches!Tyrannosaur Dinosaur Tooth Tip Tyrannosaurus Rex or Nanotyrannus .79 Inches! $295.00 Jurassic T.Rex Dinosaur Toy Tyrannosaurus Rex Model Action Figure Kids GiftJurassic T.Rex Dinosaur Toy Tyrannosaurus Rex Model Action Figure Kids Gift $9.99
Tyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur MiniatureTyrannosaurus Zombie - Boneyard #44 D&D Icons of Realms Huge Dinosaur Miniature $54.79 Motu Heman Tyrannosaurus Rex Vintage Dinosaur 1986Motu Heman Tyrannosaurus Rex Vintage Dinosaur 1986 $300.00
12" Large Tyrannosaurus Dinosaur Toy Educational Model Birthday Gift For !12" Large Tyrannosaurus Dinosaur Toy Educational Model Birthday Gift For ! $12.45 Nanmu 1/35 Tyrannosaurus Rex The Once and Future King Model T-Rex Dinosaur ToyNanmu 1/35 Tyrannosaurus Rex The Once and Future King Model T-Rex Dinosaur Toy $35.99 to
Jurassic World Tyrannosaurus Rex Extreme Damage Dinosaur Figure Cretaceous ParkJurassic World Tyrannosaurus Rex Extreme Damage Dinosaur Figure Cretaceous Park $19.99 Jurassic World Amber Collection Tyrannosaurus Rex & Compy Dinosaur Set NibJurassic World Amber Collection Tyrannosaurus Rex & Compy Dinosaur Set Nib $34.95
Electronic Walking Tyrannosaurus Rex T-Rex Dinosaur Dino Toy With Light & SoundElectronic Walking Tyrannosaurus Rex T-Rex Dinosaur Dino Toy With Light & Sound $14.98 Jurassic World Camp Cretaceous Dino Escape Mask Velociraptor Tyrannosaurus rexJurassic World Camp Cretaceous Dino Escape Mask Velociraptor Tyrannosaurus rex $34.97 to
Jurassic World Jw Tyrannosaurus T-Rex Dinosaur Figure Chomping Jaw Hasbro 2015Jurassic World Jw Tyrannosaurus T-Rex Dinosaur Figure Chomping Jaw Hasbro 2015 $13.99 Jurassic World Mattel Tyrannosaurus Rex Super Colossal 42" T-Rex Dinosaur ToyJurassic World Mattel Tyrannosaurus Rex Super Colossal 42" T-Rex Dinosaur Toy $14.99
​Jurassic World: Dominion Tyrannosaurus Rex 21" Long Dinosaur Action Figure​Jurassic World: Dominion Tyrannosaurus Rex 21" Long Dinosaur Action Figure $62.79 Rare T Rex Tyrannosaurus Bone Lance Form- Wy Dinosaur Fossil jurassic park worldRare T Rex Tyrannosaurus Bone Lance Form- Wy Dinosaur Fossil jurassic park world $99.99
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 $34.99 New Jurassic World Dinosaur Large Tyrannosaurus Rex Figure Kid Gift Building ToyNew Jurassic World Dinosaur Large Tyrannosaurus Rex Figure Kid Gift Building Toy $10.59 to
W-Dragon Rex Tyrannosaurus Rex Dinosaur Statue 1/35 Model DisplayW-Dragon Rex Tyrannosaurus Rex Dinosaur Statue 1/35 Model Display $149.99 Jet Creations T-Rex Dinosaur Tyrannosaurus Inflatable 37" for Pool Party DecoratJet Creations T-Rex Dinosaur Tyrannosaurus Inflatable 37" for Pool Party Decorat $19.95
Jurassic World Dino Escape 6" Green Tyrannosaurus Rex Dinosaur Figure Gjr54Jurassic World Dino Escape 6" Green Tyrannosaurus Rex Dinosaur Figure Gjr54 $9.95 Diy Dinosaur World Tyrannosaurus Toy Screws Assembly Take Apart Toy With ScrewsDiy Dinosaur World Tyrannosaurus Toy Screws Assembly Take Apart Toy With Screws $12.95
1988 Dino Riders Tyrannosaurus Rex Figure Tyco Trex Dinosaur Near Complete1988 Dino Riders Tyrannosaurus Rex Figure Tyco Trex Dinosaur Near Complete $550.00 Tyrannosaurus Rex Dinosaur Figure Toy T-Rex Figurine JurassicTyrannosaurus Rex Dinosaur Figure Toy T-Rex Figurine Jurassic $8.95
lot 11 Jurassic park dinosaur Huge Sale Lost World Legacy Baby Tyrannosauruslot 11 Jurassic park dinosaur Huge Sale Lost World Legacy Baby Tyrannosaurus $5.00 Tyrannosaurus T-Rex Walking Dinosaur Kids Toy Led Lights &Realistic Sounds KidsTyrannosaurus T-Rex Walking Dinosaur Kids Toy Led Lights &Realistic Sounds Kids $16.98
Tyrannosaurus Rex Brown Dinosaur Pincher Grabber Toy 18”Tyrannosaurus Rex Brown Dinosaur Pincher Grabber Toy 18” $9.99 New Jurassic Park Legacy Collection Tyrannosaurus Rex Escape Chase Pack DinosaurNew Jurassic Park Legacy Collection Tyrannosaurus Rex Escape Chase Pack Dinosaur $58.00
1993 Kenner Jurassic Park Tyrannosaurus Jp09 T-Rex Electronic Dinosaur New Inbox1993 Kenner Jurassic Park Tyrannosaurus Jp09 T-Rex Electronic Dinosaur New Inbox $250.00 Giganotosaurus Dinosaur Articulated Jaw Model Tyrannosaurus Kin EoFaunaGiganotosaurus Dinosaur Articulated Jaw Model Tyrannosaurus Kin EoFauna $48.79
Vintage Green Tyrannosaurus Rex Dinosaur Plush Stuffed ToyVintage Green Tyrannosaurus Rex Dinosaur Plush Stuffed Toy $4.99 Tyrannosaurus Rex Trex Fossil Dinosaur Tooth 1.59 Inches! Fantastic Serrations!Tyrannosaurus Rex Trex Fossil Dinosaur Tooth 1.59 Inches! Fantastic Serrations! $1,495.00
New ListingPapo 2005 T-Rex Dinosaur Green Tyrannosaurus Rex Moving Jaw FigureNew ListingPapo 2005 T-Rex Dinosaur Green Tyrannosaurus Rex Moving Jaw Figure $24.20 New T-Rex Dinosaur 16 Inch Stuffed Animal Plush Toy Tyrannosaurus RexNew T-Rex Dinosaur 16 Inch Stuffed Animal Plush Toy Tyrannosaurus Rex $11.93
Kenner Young Tyrannosaurus Rex 12 inch Dinosaur Action Figure - BrownKenner Young Tyrannosaurus Rex 12 inch Dinosaur Action Figure - Brown $150.00 Vintage 1993 Kenner Jurassic Park Jp 06 Young T-Rex Tyrannosaurus Dinosaur NiceVintage 1993 Kenner Jurassic Park Jp 06 Young T-Rex Tyrannosaurus Dinosaur Nice $59.99
Diy Tyrannosaurus Rex 1000 Pieces Round Jigsaw Puzzle Dinosaur WorldDiy Tyrannosaurus Rex 1000 Pieces Round Jigsaw Puzzle Dinosaur World $27.95 Attack of the Tyrannosaurus (Dinosaur Cove, No. 1) - Paperback - GoodAttack of the Tyrannosaurus (Dinosaur Cove, No. 1) - Paperback - Good $3.60
Tyrannosaurus Skull Pre Historic Dinosaur Bone Big Sculpture Head Trex Large NewTyrannosaurus Skull Pre Historic Dinosaur Bone Big Sculpture Head Trex Large New $545.00 Tyrannosaurus Rex Dinosaur Collection Jfk Kennedy Half Dollar U.S. Coin with CoaTyrannosaurus Rex Dinosaur Collection Jfk Kennedy Half Dollar U.S. Coin with Coa $8.95
Nanotyrannus Complete Dinosaur Tooth! Tyrannosaurus rex relative! No Repair!Nanotyrannus Complete Dinosaur Tooth! Tyrannosaurus rex relative! No Repair! $375.00 Jurassic World Dino Escape 6" Tan- Brown Tyrannosaurus Rex Dinosaur FigureJurassic World Dino Escape 6" Tan- Brown Tyrannosaurus Rex Dinosaur Figure $8.95
Dinosaur Fossil Hell Creek Formation Tyrannosaurus rex Premax toothDinosaur Fossil Hell Creek Formation Tyrannosaurus rex Premax tooth $255.00 Zuru 5 Surprise Dino Strike Hunt Mystery Tyrannosaurus T Rex DinosaurZuru 5 Surprise Dino Strike Hunt Mystery Tyrannosaurus T Rex Dinosaur $12.00
1993 Kenner Jurassic Park Tyrannosaurus Jp09 T-Rex Electronic Dinosaur w/ Box1993 Kenner Jurassic Park Tyrannosaurus Jp09 T-Rex Electronic Dinosaur w/ Box $165.50 Top Quality Very Large Tyrannosaurus Rex Trex Fossil Dinosaur Tooth 2.7 Inches!Top Quality Very Large Tyrannosaurus Rex Trex Fossil Dinosaur Tooth 2.7 Inches! $7,995.00
Tyrannosaurus T-Rex Darius Blue raptor Jurassic park world New camp cretaceousTyrannosaurus T-Rex Darius Blue raptor Jurassic park world New camp cretaceous $44.99 Tyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur MiniatureTyrannosaurus Rex - Fangs and Talons #30 D&D Icons Huge Dinosaur Miniature $14.49
lot 9 Jurassic park dinosaur Huge Sale Lost World Baby Tyrannosaurus Rex T Rexlot 9 Jurassic park dinosaur Huge Sale Lost World Baby Tyrannosaurus Rex T Rex $5.00 Dinosaur Toy Tyrannosaurus Rex Realistic Dinosaur Figure T-Rex Plastic NewDinosaur Toy Tyrannosaurus Rex Realistic Dinosaur Figure T-Rex Plastic New $24.46
$20.09 Jurassic World Park Chomp Action Tyrannosaurus T-Rex 16” Figure Hasbro Jw 2015Jurassic World Park Chomp Action Tyrannosaurus T-Rex 16” Figure Hasbro Jw 2015 $19.99
Click to see more Tyrannosaurus Rex items at www.ebay.com
Prices current as of last update, 06/19/22 10:41pm.

Home Contact Resources Exchange Links eBay