
	Where results make sense

Topic: Ornithischians

Related Topics

List of cities in Ireland

In the News (Fri 1 Jan 10)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Ornithischian Dinosaurs
		All ornithischians are united by a pubis pointing backward, running parallel with the ischium.
		The hip girdle of a typical ornithischian dinosaur is enlarged in the second diagram at right.
		In the diagram, the pubis is pale orange, the ilium is red, and the ischium is brown.
	www.ucmp.berkeley.edu /diapsids/ornithischia/ornithischia.html (174 words)

	Saurischia - Wikipedia, the free encyclopedia
		Saurischians ('lizard-hipped') are distinguished from the Ornithischians ('bird-hipped') by retaining the ancestral configuration of bones in the hip.
		The Saurischians were differentiated from the Ornithischians in the Late Triassic Period.
		The Ornithischians evolved a new hip structure, with the pubis rotating caudally, to become parallel with the ischium, often also with a forward-pointing process, giving a four-pronged structure.
	en.wikipedia.org /wiki/Saurischia (229 words)

	Ornithischia - Wikipedia, the free encyclopedia
		The ornithischian pubis bone points downward and toward the tail (backwards), parallel with the ischium, with a forward-pointing process to support the abdomen.
		A bird-like pubis arrangement, parallel to the vertebral column, independently evolved three times in dinosaur evolution, namely in the ornithischians, the therizinosauroids and in bird-like dromaeosaurids.
		The ornithischians are further divided in the two clades: the first are the Thyreophora and the second the Cerapoda.
	en.wikipedia.org /wiki/Ornithischia (403 words)

	Ornithischia - Encyclopedia, History, Geography and Biography
		The ornithischian pubis bone points downward and toward the tail, while the saurischian pubis points downward, and towards the front.
		Ornithischians also had smaller holes in front of their eye sockets (antorbital fenestrae) than saurischians, and a wider, more stable pelvis.
		A bird-hip-like pubis, parallel to the vertebral column, independently evolved three times in dinosaur evolution, namely in the ornithischians, the therizinosauroids and in bird-like dromaeosaurids.
	www.arikah.com /encyclopedia/Ornithischia (336 words)

	Untitled Document
		Ornithischians are united by a modified arrangement of hip bones in which the pubis points backward (called a bird-like hip, as this condition is convergent with modern birds).
		Ornithischian dinosaurs are united by a modified pelvic girdle with a pubis that points backwards, convergent upon the orientation of the pubis in modern birds, but distinguished by the presence in ornithischian dinosaurs of a prepubis (small in early ornithischian lineages, but large and rather pubis-like in later, derived forms like the ceratopsian Triceratops).
		Ornithischians are also uniquely posses a predentary bone, a single, cap-like bone on the front of the lower jaw, giving the mouth a beak-like appearance.
	ijolite.geology.uiuc.edu /01FallClass/geo143/lectures/lect15.html (1842 words)

	Dinosaur - Printer-friendly - MSN Encarta (Site not responding. Last check: 2007-11-07)
		The earliest ornithischians include the poorly known Triassic form Pisanosaurus from South America, and Early Jurassic groups such as Heterodontosaurus and Scutellosaurus.
		Ornithischian dinosaurs are distinguished by their “bird-like” hip girdles, and also by the presence of bone, called the predentary, on the tip of the lower jaw.
		All ornithischians were herbivorous, and the predentary appears to have served as a beak by which to crop vegetation.
	uk.encarta.msn.com /text_761573347___2/Dinosaur.html (229 words)

	Freeman-Lynde GEOL3350 Chapters 6 to 10 Questions
		Ornithischian dinosaur hip structure is characterized by a pubic bone pointing backward and parallel to the ischium.
		A major characteristic of Ornithischians is the possession of an opisthopubic pelvis (pubis rotated backward to lie close to and parallel with the ischium).
		A major characteristic of Ornithischian dinosaurs is the possession of an opisthopubic pelvis (pubis rotated backward to lie close to and parallel with the ischium).
	www.arches.uga.edu /~rfreeman/GEOL3350_Chap_6to10_quest.html (3809 words)

	Saurischia (Site not responding. Last check: 2007-11-07)
		They are distinguished from the Ornithischians by retaining the ancestral configuration of bones in the hip.
		The Saurischians were diferentiated from the Ornithischians in the Late Triassic.
		The Ornithischians evolved a new hip structure, with the Pubis rotating to become paralel with the Ischium.
	www.serebella.com /encyclopedia/article-Saurischia.html (188 words)

	ORNITHISCHIAN DINOSAURS (Site not responding. Last check: 2007-11-07)
		Ornithischians and saurischians are so unlike that it was once speculated that they may have had separate thecodont ancestors (ie dinosaurs not a single group), yet joints of both show similarities.
		The exact number and characteristics of the ornithischian families is still debated, but the most favoured classification (that based on Gauthier), divides the bird-hipped dinosaurs into basal ornithischians (such as Fabrosaurus) and the Genasauria, which is further sub-divided into the Thyreophora (including stegosaurs and ankylosaurs) and the Cerapoda (heterodontosaurids, hypsilophodonts, iguanodonts, hadrosaurs, pachycephalosaurids and ceratopids).
		Ornithischians evolved in the early Jurassic and persisted until the end of the Cretaceous period.
	www.dinoruss.org /de_4/5c52c58.htm (213 words)

	Dinosaur - Printer-friendly - MSN Encarta
		In ancestral ornithischians the bony structure projecting down and back from each side of the hips was composed of two bones, so that their hips superficially resembled the hips of birds.
		Early ornithischians were small bipedal plant eaters, about 1 m (3 ft) in length.
		Pachycephalosaurs were small bipedal ornithischians with thickened skulls, flattened bodies, and tails surrounded by a latticework of bony rods.
	encarta.msn.com /text_761573347___14/Dinosaur.html (602 words)

	Superorder Dinosauria
		Ornithischians were all herbivorous, and include bipedal ornithopods, and quadrupedal horned ceratopsians, armour-plated stegosaurs and ankylosaurs.
		The ornithischians are defined by the presence of a process on the pelvis which points down and back along the ischium.
		Ornithischians, on the other hand, have an accessory bone at the tip of the lower jaws called a predentary, triangular cheek teeth that are largest in the centre of the tooth row, and a coronoid process behind the tooth row on the lower jaws" (Carpenter 2002).
	www.peripatus.gen.nz /Taxa/Chordata/Dinosauria.html (1706 words)

	h13 Ornithischia
		Ornithischians (bird-hipped) dinosaurs are distinguished by a tetraradiate (when viewed from the side) arrangement of their pelvic bones in which the pubis points backward and has a anterior process (forward pointing outgrowth).
		Ornithischians that persisted just with this condition (Stegosurus), or evolved to loose their teeth (Ankylosaurus), bolted their food as do most reptiles.
		Fragmentary evidence of Late Triassic ornithischians is that they were all bipedal and relatively small (1 to 2 meters in adult length).
	geowords.com /histbooknetscape/h13.htm (1720 words)

	New Fossil Upsets Dinosaur Tale
		Dinosaurs are divided into two main groups, the ornithischians and saurischians, both of which, based on fossil finds, appeared to arise in the Late Triassic, between 225 and 200 million years ago.
		The early ornithischians were thought to have evolved into animals such as the stegosaurs of the Jurassic and the frilled and duck-billed dinosaurs of the Cretaceous, while the saurischians split into the sauropodomorphs--the long-necked browsers like Brachiosaurus--and the carnivorous theropods, like T.
		Irmis acknowledges that early ornithischians may have been around, yet were rare and living in places not conducive to the preservation of fossils.
	www.worldandihomeschool.com /subscribers/feature_detail.asp?num=24553 (1138 words)

	DinoDatabase.com :: Discovery and Classification \| Thyreophora
		The size of these ornithischians ranged from small to fairly large.
		They were mostly quadrupedal (with the exception of more primitive species) and all possessed body armor.
		Thyreophora is generally broken into two infraorders: the Ankylosauria, and the Stegosauria.
	www.dinodatabase.com /dinoclas10.asp (102 words)

	Classification of Dinosaurs by Order - Dinosaur Info
		Ornithischians had a hip structure that is similar to that of birds.
		However, it is the Saurischians, and not the Ornithischians, that were the ancestors of birds.
		Ornithischians also had beak-like bone in the lower jaw in front of the teeth, called a predentary.
	www.dinosaur-info.com /by-order (237 words)

	Ornithischian Dinosaurs - Enchanted Learning Software
		The Ornithischian dinosaurs had a hip structure similar to that of birds, but they were not the ancestors of birds.
		The pubis bone (part of the structure of the hip) points downwards and toward the tail in Ornithischians, an opisthopubic condition (it points downwards and to the front in the Saurischians) and.
		Ornithischians outnumbered the Saurischians (the lizard-hipped dinosaurs, theropods and sauropods).
	www.enchantedlearning.com /subjects/dinosaurs/dinoclassification/Ornithischian.html (327 words)

	Evolving Away from Extinction - Science - RedOrbit (Site not responding. Last check: 2007-11-07)
		Dinosaurs are divided into two main groups, the ornithischians and saurischians, both of which, based on fossil finds, appeared to arise in the Late Triassic, between 225 and 200 million years ago.
		The early ornithischians were thought to have evolved into animals such as the stegosaurs of the Jurassic and the frilled and duck-billed dinosaurs of the Cretaceous, while the saurischians split into the sauropodomorphs - the long-necked browsers like Brachiosaurus - and the carnivorous theropods, like T. rex.
		Irmis acknowledges that early ornithischians may have been around, yet were rare and living in places not conducive to the preservation of fossils.
	www.redorbit.com /news/science/158517/evolving_away_from_extinction/index.html (1195 words)

	Science Fair Projects - Ornithischia
		Ornithischians also had smaller holes in front of their eye sockets (antiorbital fenestrae) than saurischians, and a wider, more stable pelvis.
		The ornithischians are further divided in the two clades: Thyreophora, which includes the armored Stegosaurus and Ankylosaurus; Cerapoda, which includes the frilled ceratopsids and pachycephalosaurids, and duck-bills (hadrosaurs) like Edmontosaurus.
		The Cerapoda is a relatively recent grouping (Sereno, 1986), and may be identical to (synonymous with) the older group, Ornithopoda.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Ornithischia (430 words)

	Prehistoric Life - Dinosaur Family Tree. (Site not responding. Last check: 2007-11-07)
		These gave rise to the saurischian or 'lizard-hipped' dinosaurs and the ornithischian or 'bird-hipped' dinosaurs, each of which diversified into a great variety of forms over the next 130 million years.
		All the ornithischians are thought to have been plant-eaters.
		Other differences in the skeletons of the two groups are the presence in the ornithischians of an extra bone at the front of the lower jaw (predentary bone), and the thin bony rods or tendons that support the backbones of the saurischians.
	www.mov.vic.gov.au /prehistoric/dinosaurs/dinotree.html (249 words)

	Ornithischian dinosaurs
		Although even the earliest ornithischians have a very different pelvic structure to the saurischians (see cladogram) they appear in the fossil record at the same time.
		As with saurischians, ornithischians were primitively bipedal but quadrupedalism developed independantly several times; each major group of ornithischians had quadrupedal members.
		However in contrast to the theropods, Triassic ornithischians are very poorly known; it is not until the Jurassic that relatively complete skeletons are found.
	carbon.cudenver.edu /~jwright/Dinos/WebWhatDinos/Ornithischian.htm (1040 words)

	[No title]
		The only carnivores were the theropds saurischians and, although they were relatively conservative in body design they were far from conservative in the ways they went about obtaining their food.
		Ornithischians with broader muzzles probably fed in a more rough and ready manner taking mixtures of leaves, twigs, bark and anything else caught between the guillotine-like edges of the beak.
		The most simple type of ornithischian tooth was approximately diamond-shaped with coarsely serrated edges and rather similar to those of sauropodomorphs.
	palaeo.gly.bris.ac.uk /Communication/Trickett/jaws.diet.html (1247 words)

	Ornithischians
		Ornithischian dinosaurs were all plant-eaters and included the stegosaurs, ankylosaurs, hadrosaurs, ceratopsids and pachycephalosaurs.
		Each had a toothless 'beak' at the front of the lower jaw that was used for gathering, plucking or cropping vegetation.
		Although their name implies a relationship, the ornithischians did not give rise to birds.
	www.manitobamuseum.ca /mu_ornithischians.html (88 words)

	ornithischia
		Unlike the other main group of classic dinosaurian herbivores, the sauropodomorphs, ornithischians display a wide variety of bodily features that appear to have been used for display and recognition, like the vertebral fins and headgear of hadrosaurids and some iguanodonts.
		Large-scale ornithischian relationships have been stable and mostly unquestioned for the last 20 or so years, except for minor quibbles about where heterodontosaurids go, the position of Scelidosaurus vis-à-vis the ankylosaurians and stegosaurians, and if hypsilophodontids form a natural group.
		They have been wild-cards, given the paucity of other early ornithischians to compare them to, and have been put with the ornithopods, or closer to the marginocephalians due to their jugal (cheek-area) bosses and tusks, the latter of which are also known in pachycephalosaurians, and some pelvic and hand details.
	www.users.qwest.net /~jstweet1/ornithischia.htm (2033 words)

	European Astrobiology Magazine
		This suggests that the herbivorous ornithischians and the meat-eating theropods, like Tyrannosaurus rex, did not evolve together in the Late Triassic as many paleontologists thought.
		This suggests, he said, that the herbivorous ornithischians and the meat-eating theropods, like Tyrannosaurus rex, did not evolve together in the Late Triassic as many paleontologists thought.
		The evolutionary tree of dinosaurs and crocodiles, showing that Revueltosaurus is not an ornithischian dinosaur, but a dead-end offshoot of the line leading to crocodiles.
	euro.astrobio.net /news/print.php?sid=1616 (1263 words)

	DinoDatabase.com :: Discovery and Classification \| Classification
		The ornithischian pubis and ischium both point backward.
		One would think that the birds would be descended from the ornithischians, which means "bird hipped", but such is not the case.
		The reason for the confusion is that although the division by pelvic structure is valid, the resemblance of the ornithischian pelvis to that of modern birds is only superficial.
	www.dinodatabase.com /dinoclas01.asp (288 words)

	Literature - Basal Ornithischians & Fabrosaurids (Site not responding. Last check: 2007-11-07)
		GALTON P.M. (1978): Fabrosauridae, the basal family of ornithischian dinosaurs (Reptilia: Ornithopoda).
		THULBORN R.A. (1972): The post-cranial skeleton of the triassic ornithischian dinosaur
		, an ornithischian dinosaur from the Lower Jurassic of Southern Africa.
	www.students.uni-mainz.de /fastm000/Literatur/Fabrosauria.html (101 words)

	.:Dinosauria:. (Site not responding. Last check: 2007-11-07)
		The peak of all the ornithischians is very seemed, having only two sub-groups with well differentiated peaks: Ceratopsia and Hadrosauridae.
		It is probable that the therizinosaurids, as well as occur with all the ornithischians, have presented an herbivorous diet or, at least, omnivore one, making use of the peak to cut branches of trees and teeth to grind them.
		The peak of the ornithischians, in contrast, is formed by the predentary and premaxillary bones.
	www.dinosauriaong.hpg.ig.com.br /dino/ebico.htm (980 words)

	Dinosaurs (Site not responding. Last check: 2007-11-07)
		There were two major types of dinosaur structure - the saurishians ("saur" for reptile and "ishian" for the part of the pelvic girdle called the ishium - "reptile-hipped") and the ornithischians ("ornith" for bird - "bird-hipped").
		The saurischians had a pelvic girdle similar to the ancestral type while the ornithischians had evolved a modified approach to the problem of upright posture and movement - the pubis, the front bone of the pelvic girdle, was shifted from a forwards to a backwards position.
		The saurischians are also more closely related to the birds than the ornithischians are, in spite of the similarity of hip structure in the birds and ornithischians.
	www.bio.miami.edu /tom/bil160/bil160goods/21_dinos.html (1834 words)

	Ecology of End-Cretaceous "Omnivorous" Ornithischians
		With Justin Tweet's hypothesis of end-K theropod outcompeting ornithischians in the small- to medium-sized omnivores or herbivores, I thought I'd help with some alternate work on some of the taxa present at the end of the Cretaceous that will be used for comparison.
		In the Mongolian strata, the theropod influence is strong, where small ornithischians are very few and far between, predominant in Pinacosaurus and Protoceratops and other non-ceratopid ceratopians; hadrosaurs are also fairly reduced to a few taxa, with one predominant and large species, Saurolophus.
		Other Maastrichitan levels bearing theropods and ornithischians, such as the Sinpetru Formation of Romania, have a large diversity of large ornithischians relative to theropod size, but without comparative size between the two to suggest competition [preserved] this level cannot be used in comparison.
	dml.cmnh.org /2001Aug/msg00703.html (817 words)

	Dinosaur Origins
		The main difference is that the Saurischians had a forward pointing pubis bone and the Ornithischians had a backward pointing pubis bone.
		Besides the distinctive hip (with a backward pointing pubis), all Ornithischians have a beak-like bone at the tip of their lower jaw called the Predentary bone.
		Descendants of these small ornithischians would later branch out and form several major dinosaur groups that would grow to huge proportions and many would have various types of armour.
	www.monsters4u.com /dinosaurs/origin.shtml (642 words)

Try your search on: Qwika (all wikis)