Since small,i'm really interested about dinosaur...until now,i also never get bored about dinosaur!Even though dinosaur already dissapear,but we still can find its fossil or article about it at museum.Many scientist also really interesting about this creature and still wish to find out its mystery.
Here are some detail about dinasaur...
Dinosaurs were the dominant vertebrate animals of the terrestrial ecosystems for over 160 million years, first appearing approximately 230 million years ago. At the end of the Cretaceous Period, 65 million years ago, a catastrophic extinction event ended the dominance of dinosaurs on land. One group of dinosaurs is known to have survived to the present day: taxonomists believe modern birds are direct descendants of theropod dinosaurs.
Since the first dinosaur fossils were recognized in the early nineteenth century, mounted dinosaur skeletons have become major attractions at museums around the world. Dinosaurs have become a part of world culture and remain consistently popular among children and adults. They have been featured in best-selling books and films, and new discoveries are regularly covered by the media.
What is a Dinosaur?
The taxon Dinosauria was formally named in 1842 by English palaeontologist Richard Owen, who used it to refer to the "distinct tribe or sub-order of Saurian Reptiles" that were then being recognized in England and around the world. Though the taxonomic name has often been interpreted as a reference to dinosaurs' teeth, claws, and other fearsome characteristics, Owen intended it merely to evoke their size and majesty.
The following is a simplified classification of dinosaur families:
Dinosauria
Saurischia (theropods and sauropods)
Herrerasaurians (early bipedal predators)
Theropods (all bipedal; most were carnivores)
Coelophysoids (Coelophysis and close relatives)
Ceratosaurians (Ceratosaurus and abelisaurids - the latter were important Late Cretaceous predators in southern continents)
Spinosauroids (long bodies, short arms, some with crocodile-like skulls and bony "sails" in their backs)
Carnosaurians (Allosaurus and close relatives, like Carcharodontosaurus)
Coelurosaurians (diverse, with a range of body sizes and niches)
Tyrannosauroids (small to gigantic, often with reduced forelimbs)
Ornithomimosaurians ("ostrich-mimics", toothless, carnivores to herbivores)
Therizinosauroids (bipedal herbivores with long arms and small heads)
Oviraptorosaurians (toothless; their diet and lifestyle are uncertain)
Dromaeosaurids (like the "raptors" in Jurassic Park)
Troodontids (similar to dromaeosaurids, but more lightly built, and possibly omnivorous)
Birds (the only living dinosaurs)
Sauropodomorphans (quadrupedal herbivores with small heads and longe necks and tails, and elephant-like bodies)
"Prosauropods" (early relatives of sauropods; small to quite large; some possibly omnivorous; bipeds and quadrupeds)
Sauropods (very large, usually over 15 meters long [49 ft])
Diplodocoids (skulls and tails elongated; teeth typically narrow and pencil-like)
Macronarians (boxy skulls; spoon-shaped or pencil-shaped teeth)
Brachiosaurids (very long necks; forelimbs longer than hindlimbs)
Titanosaurians (diverse; stocky, with wide hips; most common in the Late Cretaceous of southern continents)
Ornithischians (diverse bipedal and quadrupedal herbivores)
Heterodontosaurids (meter- or yard-scale herbivores or omnivores with prominent canine teeth)
Thyreophorans (armored dinosaurs, mostly quadrupeds)
Ankylosaurians (scutes as primary armor; some had club-like tails)
Stegosaurians (spikes and plates as primary armor)
Ornithopods (diverse, from meter- or yard-scale bipeds to 12 meter (39 ft) animals that could moves as both bipeds and quadrupeds, evolved a method of chewing using skull flexibility and large numbers of teeth)
Hadrosaurids ("duckbilled dinosaurs")
Pachycephalosaurians ("bone-heads", bipeds with domed or knobby growth on skulls)
Ceratopsians (dinosaurs with horns and frills, although most early forms had only the rudiments of these features)
