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dinosaur

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Ankylosaurus

Ankylosaurus  

Genus of Cretaceous dinosaurs, heavily armoured with bony plates, rather in the manner of armadillos. They had small heads with insignificant teeth, and some forms were toothless.
Apatosaurus

Apatosaurus  

(order Saurischia, suborder Sauropoda)One of several gigantic dinosaurs recorded from the Late Jurassic, Apatosaurus was a quadruped with a long neck whose total weight reached 30 tonnes. The name ...
Archaeopteryx lithographica

Archaeopteryx lithographica  

The first known bird, of which only six specimens and one feather imprint have been found, all of them from the Lithographic Limestone of the Solnhofen region of Bavaria, Germany. The bird was first ...
Archosauria

Archosauria  

(class Reptilia)A subclass of diapsid reptiles that includes the orders Crocodilia, Ornithischia, Saurischia, Pterosauria, and Thecodontia. Thecodontians were ancestral to the other groups and ...
carnosaur

carnosaur  

A saurischian (Saurischia), carnivorous dinosaur that was bipedal, powerfully built, and possessed large, dagger-like teeth. Tyrannosaurus rex, of the Late Cretaceous, represented the culmination of ...
Ceratopsia

Ceratopsia  

(subclass Archosauria, order Ornithischia)A suborder of horned dinosaurs which had beak-like jaws, from the Late Cretaceous. The head accounted for about one-third of the total length of the body ...
Coelophysis

Coelophysis  

One of the first flesh-eating dinosaurs, recorded from the Late Jurassic of N. America. It was a slender, bipedal coelurosaur less than 2 m in length, weighing approximately 23 kg. It had a small ...
Coelurosauria

Coelurosauria  

(order Saurischia, suborder Theropoda)An infra-order of carnivorous, bipedal dinosaurs that had small skulls, sharp, serrated teeth, long necks and tails, and hands with long, grasping fingers. They ...
continent

continent  

One of the seven major land areas on the Earth, which are North America, South America, Europe, Africa, Asia, Australia, and Antarctica.
Cretaceous

Cretaceous  

The youngest period of Mesozoic time from c.136 to 65 million years bp.http://www.ucmp.berkeley.edu/mesozoic/cretaceous/cretaceous.html An overview of the Cretaceous period.
Crocodilia

Crocodilia  

(class Reptilia)Order of the ‘ruling reptiles’ (Archosauria) which includes the crocodiles, alligators, caimans, and gavials (gharials). They are derived from thecodontian ancestors and are closely ...
diapsid

diapsid  

Applied to a type of skull that has two temporal openings behind the eye. This is typical of Archosauria, Lepidosauria, and Rhynchocephalia. See also Diapsida.Diapsid
dinosaur

dinosaur   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
123 words

Any of a large number of reptiles that lived during the Mesozoic era, between 225 and 65 million years ago.

dinosaur

dinosaur   Quick reference

The Oxford Dictionary of Phrase and Fable (2 ed.)

Reference type:
Subject Reference
Current Version:
2006
a fossil reptile of the Mesozoic era, often reaching an enormous size; in extended usage, a person or thing that is outdated or has become obsolete because of failure to adapt to changing ... More
Dinosaurs

Dinosaurs   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
3,672 words
Illustration(s):
2

Dinosauria was first recognized as a group and named in 1842 by the great British anatomist Sir Richard Owen.

Dinosaurs

Dinosaurs   Reference library

Magic Universe: A Grand Tour of Modern Science

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, History of Science
Length:
1,828 words

Why small was beautiful in the end

When reptiles ruled the earth, the great survival strategies were to

dinosaurs

dinosaurs   Reference library

The Oxford Companion to Canadian History

Reference type:
Subject Reference
Current Version:
2004
Subject:
History, Regional and National History
Length:
314 words

The first dinosaur bones in Canada were reported from southern Saskatchewan in 1874. By 1910, the rich dinosaur

dinosaurs

dinosaurs   Reference library

The Oxford Companion to the Earth

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Earth Sciences and Geography
Length:
1,821 words
Illustration(s):
2

The name ‘dinosaur’ (‘terrible reptile’) was first coined by Sir Richard Owen, a British anatomist, in 1841. He

Diplodocus

Diplodocus  

Reference type:
Overview Page
Dinosaur that lived in n USA during the Jurassic period. The longest land animal ever found. It had a long slender neck and tail and was a swamp-dwelling herbivore. Length: 25m (82ft).[...]
dromaeosaurid

dromaeosaurid  

A member of the Coelurosauria branch of the theropod dinosaurs which developed from the genus Dromaeosaurus (the ‘emu reptile’), known from the early Late Cretaceous of Canada. Dromaeosaurids had ...

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