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- List of dinosaur classifications (7586 bytes)
7: ...sauria is then divided into the two traditional orders, [[Saurischia]] and [[Ornithischia]]. The dagge...
9: === Order Saurischia ===
11: * Suborder [[Theropoda]]
12: ** †Infraorder [[Coelophysoidea]]
13: ** †Infraorder [[Ceratosauria]] - Dinosaur (35313 bytes)
2: ...> [[United States Department of the Interior|U.S. Department of the Interior]]}}
6: {{Taxobox_classis_entry | taxon = [[Archosauria]]}}
9: ...ion_subdivision | color = pink | plural_taxon = Orders}}
17: ...rd_flying.jpg |thumb|300px|left|Tenontosaurus and deinonych]]
18: ...he [[media]]. The term is also used informally to describe any prehistoric reptile, like the [[pelycos... - Albertosaurus (2738 bytes)
2: {{Taxobox image | image =[[Image:Albertosaurus model.jpg|200px|Albertosaurus]] | caption = }}
7: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
19: ... were somewhat smaller. ''Albertosaurus'' also tended to be less massive than ''T. rex'', as well as i...
23: ...lion years, except for a trend towards a more slender or gracile form.
37: ...ther ''Albertosaurus'' species to resurrect the older genus name of ''[[Gorgosaurus]]''. - Archaeopteryx (8771 bytes)
2: ...:Archaeopteryx-model.jpg|250px|]] | caption = A model of ''Archaeopteryx lithographica''<br/> on displ...
6: {{Taxobox_classis_entry | taxon = [[Archosauria]]}}
17: ...[The Origin of Species]]'' set off a firestorm of debate about [[evolution]] and the role of [[transit...
27: ...|200px|left|Illustration of a Archaeopteryx, provided by [http://classroomclipart.com Classroom Clipar...
28: ...tures) lineage of which eventually gave rise to modern birds. - Tyrannosaurus rex (20653 bytes)
1: ...aur_clipart.jpg|150px|thumb|Dinosaur Clipart provided by [http://classroomclipart.com Classroom Clip A...
6: {{Taxobox_classis_entry | taxon = [[Archosauria]]}}
15: ... the largest to have ever existed. New finds have dethroned it as the largest theropod, but ''T. rex''...
18: ...ton in [[Wyoming]] in [[1900]]. This skeleton resides in [[London]].
22: ...eropod, and the serrated teeth, far from being bladelike, are massive and oval in cross-section. Heavy... - Triceratops (4523 bytes)
26: ...] in [[1889]]. Two years earlier, however, he misidentified the ''Triceratops'' as a type of [[bison]]...
28: Known species of ''Triceratops'' include ''T. prorsus'' and ''T. horridus''. ''[[Diceratop...
35: * Defense against carnivores such as ''[[Tyrannosaurus...
39: * A status symbol which reflects (or determines) the individual's status in the herd.
44: ...iceratops'' lived in herds, similar to those of modern-day [[buffalo]]. Its food was [[plant]]s and sh... - Iguanodon (4585 bytes)
7: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
16: ''I. atherfieldensis''<br/>
24: ...eosaurus]]'', one of the three originally used to define the new classification, [[Dinosaur]]ia.
26: == Description ==
34: [[Gideon Mantell]]'s wife, Mary Ann, discovered the firs... - Torosaurus (1521 bytes)
7: {{Taxobox_classis_entry | taxon = [[Archosauria]]}} - Therizinosaurus (2468 bytes)
6: {{Taxobox_classis_entry | taxon = [[Archosauria]]}}
24: ...e feeding habits of ''Therizinosaurus'' are still debated, but it was most probably an [[herbivore]], ...
26: ...sible uses for ''Therizinosaurus'' claws, such as defence against predators (such as the contemporary ... - Tarbosaurus (2258 bytes)
7: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
17: ...ng the [[Late Cretaceous]]. It is sometimes included in the genus ''[[Tyrannosaurus]]''.
19: ... it in the [[Tyrannosaurus]] genus (the resulting designation would then be ''[[Tyrannosaurus]] bataar... - Supersaurus (1508 bytes)
6: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
18: ... which was named [[Ultrasauros]], but is now regarded to be the same species as [[Supersaurus]]. - Stegosaurus (3704 bytes)
8: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
24: ...and the four long spikes on the tail. Its name is derived from the plates, and means "roofed" or "cove...
29: ...t ton]]s) in mass, though most species never exceeded 7 meters (23 feet), and about 2,000 kg (2 short ...
31: ...own the back. The plates are highly modified osteoderms, or bony-cored scales, similar to those seen i...
33: ...blished in [[2005]] points to a simpler purpose: identification. Researchers also believe this may be... - Turtle (6271 bytes)
2: ...4.jpg|240px]] | caption =Sea Turtle. Picture provided by [http://classroomclipart.com Classroom Clip A...
12: ...oday. When a turtle is in its egg the temperature determines whether it's male or female: a higher tem...
14: ...e lived longer than 150 years. The [[Tui Malila|oldest tortoise on record]] is known to have lived at ...
16: ...n more ancient [[clade]] [[Anapsida]], which includes groups such as the [[procolophonoid]]s, [[miller...
17: ...le_tortoise.jpg|thumb|300px|Tortiose Picture provided by [http://classroomclipart.com Classroom Clip A... - Allosaurus (6281 bytes)
7: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
24: == Description ==
26: ...r large, eagle-like [[claw]]s. The skull shows evidence of being composed of separate modules, which c...
35: ...fection]], which probably contributed to Big Al's death. It was featured in the [[BBC]]'s ''[[Walking ...
39: ...er material including a partial skeleton, from Garden Park, north of [[Canon City, Colorado]]. - Turtles, Tortoises, and Terrapins (8143 bytes)
13: ...s are now highly endangered, largely due to beach development and over-hunting.
15: ==Description==
21: ...known to have lived longer than 150 years. The oldest tortoise on record is [[Tui Malila]], known to ...
23: ...ies, temperature determines whether an pot[[egg]] develops into a male or a female: a higher temperatu...
25: ...ugh they spend large proportions of their lives underwater, turtles are air-breathing reptiles, and mu... - Abelisaurus (2156 bytes)
5: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
20: ...ostcranial remains of this dinosaur have not been described. Large fenestrae (window-like openings) i... - Achelousaurus (1365 bytes)
21: ...]] of [[North America]]. The first examples were described by [[Scott D. Sampson]] in 1995; the spec... - Acrocanthosaurus (1730 bytes)
6: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}} - Carcharodontosaurus (1508 bytes)
6: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}} - Adasaurus (1845 bytes)
6: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
17: ...all in Mongolia, but based mainly in the [[Gobi]] desert region.
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