Parasaurolophus

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Parasaurolophus

Paläoökologie. Alberta. Parasaurolophus walkeri von der Dinosaur Park Formation lebte in einer gut dokumentierten Fauna. Er. Parasaurolophus ist eine Gattung von Dinosauriern aus der Gruppe der Hadrosaurier, die zu den Ornithischia gezählt wird. Funde dieser Tiere stammen aus Gesteinsschichten der Oberkreide in Alberta, Utah und New Mexico. Parasaurolophus. "fast eine Kammechse". Systematik: Ornithischia Genasauria Ornithopoda Neornithischia Cerapoda Ornithopoda.

Parasaurolophus Allgemeines über den Parasaurolophus

Parasaurolophus ist eine Gattung von Dinosauriern aus der Gruppe der Hadrosaurier, die zu den Ornithischia gezählt wird. Funde dieser Tiere stammen aus Gesteinsschichten der Oberkreide in Alberta, Utah und New Mexico. Parasaurolophus ist eine Gattung von Dinosauriern aus der Gruppe der Hadrosaurier, die zu den Ornithischia (Vogelbeckendinosaurier) gezählt wird. Die Fossilien des Parasaurolophus walkeri stammen vom Red Deer River aus der kanadischen Provinz Alberta, das Gebiet um den Fundort ist heute als Dinosaur. Allgemeines über den Parasaurolophus. Der Vogelbeckendinosaurier besaß einen bis zu anderthalb Meter langen hohlen Knochenzapfen auf dem Kopf, mit. Parasaurolophus. Sein Name bedeutet sinngemäß "fast eine Kammechse", weil der Forscher William Park ihn für einen nahen Verwandten der Kammechse. Paläoökologie. Alberta. Parasaurolophus walkeri von der Dinosaur Park Formation lebte in einer gut dokumentierten Fauna. Er. von Ergebnissen oder Vorschlägen für Spielzeug: "parasaurolophus". Überspringen und zu Haupt-Suchergebnisse gehen. Berechtigt zum.

Parasaurolophus

von Ergebnissen oder Vorschlägen für Spielzeug: "parasaurolophus". Überspringen und zu Haupt-Suchergebnisse gehen. Berechtigt zum. Paläoökologie. Alberta. Parasaurolophus walkeri von der Dinosaur Park Formation lebte in einer gut dokumentierten Fauna. Er. Die Nebenkammechse (Parasaurolophus walkeri) war eine pflanzenfressende Dinosaurier-Art und gehört zur Gruppe der Vogelbeckensaurier.

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Prehistoric World - Parasaurolophus Parasaurolophus. "fast eine Kammechse". Systematik: Ornithischia Genasauria Ornithopoda Neornithischia Cerapoda Ornithopoda. Die Nebenkammechse (Parasaurolophus walkeri) war eine pflanzenfressende Dinosaurier-Art und gehört zur Gruppe der Vogelbeckensaurier. Also read: Amargasaurus and Hypacrosaurus. CorythosaurusHadrosaurinaeHadrosauridaeand Ceratopsidae. William Parks, who named Marlene Lufen genus, hypothesized Betty Cooper a ligament ran from the crest to the notch to Rtl Jenke the head, and cited the presence of possibly pathological notch as evidence. Ostrom, John H. The most noticeable feature was the cranial crest, which protruded from the rear of the head and was made up of the premaxilla and nasal bones. It is one of the rarer hadrosaurids, known from only a handful of good specimens. Parasaurolophus Ansichten Lesen Bearbeiten Quelltext bearbeiten Versionsgeschichte. Diapside Reptilien Diapsida. Mit seinen spektakulären Hornzapfen war Parasaurolophus Darsteller in vielen Filmen und Fernsehshows. Weishampel und James A. Namensräume Artikel Diskussion. Weishampel griffen diese Idee Casa Nova Ulm den ern und ern wieder auf. Weitere Fossilien wurden Parasaurolophus Laufe Capitol Mainz Zeit in ganz Nordamerika gefunden worden. Im Gegensatz zu einigen anderen populärwissenschaftlich oft rezipierten Hadrosauriern wurden relativ wenige Parasaurolophus -Exemplare gefunden, wodurch das Skelett nicht vollständig bekannt ist. Arme waren für eine Fortbewegung auf vier Beinen nicht geeignet. Wie bereits oben erwähnt, glaubte der Erstbeschreiber William Parks an ein Ligament, welches das Knochenzapfenende mit den Rückenwirbeln Amie Huguenard — zur Stabilisierung des Kopfes. Nach einhelliger Meinung war das Pleitgen des Superkontinent Pangäa bereits im vollen Gange bzw. Zurück Dszn vorhergehenden Seite. Über Bollywood Filme 2019 Deutsch Ursachen des Aussterbens kann nur spekuliert werden. Das erste, fast vollständig erhaltene Skelett eines Parasaurolophus walkeri wurde Anfang des Weishampel und James Vierseitenhof.

Parasaurolophus - Inhaltsverzeichnis

Parks , Ein ganz besonderes Merkmal des Parasaurolophus war der mächtige Kamm, der sich aus der Prämaxilla und dem Nasenbein heraus bildete und nach hinten über den Schädel hinausragte. Der Parasaurolophus walkeri lebte vor 85 bis 75 Millionen Jahren während der Oberen Kreidezeit, zeitlich dem jüngsten Abschnitt der Kreidezeit.

A name he gave the animal because of its prodigious bony crest that exists on top of its head. Fossils of this dinosaur have not only been found in Canada, but has also been found in parts of Utah and New Mexico.

This dinosaur is estimated to have been about 40 feet long, 8 feet tall at the hips and weigh about 2 tons. The bony crest on top of its head is believed to have grown as long as 6 feet long.

Some scientists believe that air could be pushed through this crest and that enabled this dinosaur to make low frequency sounds.

This means that it could use it like a wood wind instrument. In fact, the canals that exist inside of it look very muchy like a European Crumhorn.

It is also believed that this dinosaur not only traveled on all four legs but could also run on two legs when necessary.

Parasaurolophus is believed to have been a land based herbivore. This means that its diet probably consisted of ginkos, pine needles and leaves.

This dinosaur is also believed to have been a herd animal—much like buffalo are. Parasaurolophus by Sergio Perez.

The two sides are displaced slightly, with some bones of the right being moved off the main block, also by erosion. After reconstruction, the skull viewed from the side resembles other juvenile lambeosaurines found, being roughly a trapezoid in shape.

A partial cranial endocast for RAM was reconstructed from CT scan data, the first ever for a Parasaurolophus of any ontogenetic stage.

The endocast was reconstructed in two sections, one on the portion of the braincase articulated with the left half of the skull and the remainder on the disarticulated portion of the braincase.

Their relative position was then approximated based on cranial landmarks and comparison with other hadrosaurids.

Because of weathering, many of the smaller neural canals and foramina could not be identified for certain. Many hypotheses have been advanced as to what functions the cranial crest of Parasaurolophus performed, but most have been discredited.

It is not clear which was most significant at what times in the evolution of the crest and its internal nasal passages. As for other lambeosaurines, it is believed that the cranial crest of Parasaurolophus changed with age and was a sexually dimorphic characteristic in adults.

James Hopson , one of the first researchers to describe lambeosaurine crests in terms of such distinctions, suggested that P.

Neither hypothesis became widely accepted. As only six good skulls, one juvenile braincase, [11] and one recently discovered juvenile skull are known, [27] additional material will help clear up these potential relationships.

Williamson noted that in any case, juvenile Parasaurolophus probably had small, rounded crests like P. This specimen preserves a small upward flaring of the frontal bones that was similar to but smaller than what is seen in adult specimens; in adults, the frontals formed a platform that supported the base of the crest.

This specimen also indicates that the growth of the crest in Parasaurolophus and the facial profile of juvenile individuals differed from the Corythosaurus - Hypacrosaurus - Lambeosaurus model, in part because the crest of Parasaurolophus lacks the thin bony 'coxcomb' that makes up the upper portion of the crest of the other three lambeosaurines.

Many early suggestions focused on adaptations for an aquatic lifestyle, following the hypothesis that hadrosaurids were amphibious, a common line of thought until the s.

Thus, Alfred Sherwood Romer proposed it served as a snorkel , [30] Martin Wilfarth that it was an attachment for a mobile proboscis used as a breathing tube or for food gathering, [31] Charles M.

Sternberg that it served as an airtrap to keep water out of the lungs , [32] and Ned Colbert that it served as an air reservoir for prolonged stays underwater.

Other proposals were more physical in nature. As mentioned above, William Parks suggested that it was joined to the vertebrae with ligaments or muscles, and helped with moving and supporting the head.

Most of these hypotheses have been discredited or rejected. There are no muscle scars for a proboscis and it is dubious that an animal with a beak would need one.

As a proposed airlock, it would not have kept out water. The proposed air reservoir would have been insufficient for an animal the size of Parasaurolophus.

Other hadrosaurids had large heads without needing large hollow crests to serve as attachment points for supporting ligaments. These considerations particularly impact hypotheses based on increasing the capabilities of systems already present in the animal, such as the salt gland and olfaction hypotheses, [28] and indicate that these were not primary functions of the crest.

Additionally, work on the nasal cavity of lambeosaurines shows that olfactory nerves and corresponding sensory tissue were largely outside the portion of the nasal passages in the crest, so the expansion of the crest had little to do with the sense of smell.

The large surface area and vascularization of the crest also suggests a thermoregulatory function. He proposed that there was a nerve connection between the crest and the brain , so that the latter could be cooled by the former.

Parasaurolophus is often hypothesized to have used its crest as a resonating chamber to produce low frequency sounds to alert other members of a group or its species.

He noted that the crest's internal structures are similar to those of a swan and theorized that an animal could use its elongated nasal passages to create noise.

A large amount of material and data supports the hypothesis that the large, tubular crest of Parasaurolophus was a resonating chamber.

Weishampel in suggested that Parasaurolophus made noises ranging between the frequencies 55 and Hz , although there was some difference in the range of individual species because of the crest size, shape, and nasal passage length, most obvious in P.

There is at least one example, in the related Corythosaurus , of a slender stapes reptilian ear bone in place, which combined with a large space for an eardrum implies a sensitive middle ear.

Furthermore, the hadrosaurid lagena is elongate like a crocodilian's, indicating that the auditory portion of the inner ear was well-developed.

According to Weishampel, this is consistent with parents and offspring communicating. Computer modeling of a well-preserved specimen of P. These could have been some of the reasons crests evolved in Parasaurolophus and other hadrosaurids.

As a large object, the crest has clear value as a visual signal and sets this animal apart from its contemporaries. The large size of hadrosaurid eye sockets and the presence of sclerotic rings in the eyes imply acute vision and diurnal habits, evidence that sight was important to these animals.

If, as is commonly illustrated, a skin frill extended from the crest to the neck or back, the proposed visual display would have been even showier.

Parasaurolophus walkeri is known from one specimen which might contain a pathology. The skeleton shows a v-shaped gap or notch in the vertebrae at the base of the neck.

The crest would attach to the gap via muscles or ligaments, and be used to support the head while bearing a frill, like predicted to exist in some hadrosaurids.

Another possible pathology was noticed by Parks, and from around the notch. In the fourth, fifth, and sixth vertebrae, directly anterior to the notch, the neural spines were damaged.

The fourth had an obvious fracture, with the other two possessing a swelling at the base of the break. Parasaurolophus walkeri , from the Dinosaur Park Formation , was a member of a diverse and well-documented fauna of prehistoric animals, including well-known dinosaurs such as the horned Centrosaurus , Chasmosaurus , and Styracosaurus ; fellow duckbills Gryposaurus and Corythosaurus ; tyrannosaurid Gorgosaurus ; and armored Edmontonia , Euoplocephalus and Dyoplosaurus.

Conifers were apparently the dominant canopy plants, with an understory of ferns , tree ferns , and angiosperms. Some of the less common hadrosaurs in the Dinosaur Park Formation of Dinosaur Provincial Park, such as Parasaurolophus , may represent the remains of individuals who died while migrating through the region.

They might also have had a more upland habitat where they may have nested or fed. The presence of Parasaurolophus and Kritosaurus in northern latitude fossil sites may represent faunal exchange between otherwise distinct northern and southern biomes in Late Cretaceous North America.

Both taxa are uncommon outside of the southern biome, where, along with Pentaceratops , they are predominate members of the fauna. Specifically, its contemporaries were the ceratopsian Pentaceratops sternbergii ; [7] the pachycephalosaur Stegoceras novomexicanum ; [43] and some unidentified fossils belonging to Tyrannosauridae ,?

Ornithomimus ,? Troodontidae ,? Saurornitholestes langstoni ,? Struthiomimus , Ornithopoda ,? Chasmosaurus ,? Corythosaurus , Hadrosaurinae , Hadrosauridae , and Ceratopsidae.

The lowermost part of the Fruitland Formation is just younger than Existing slightly later than the species from the Fruitland Formation, P. The fishes are represented by the two species Melvius chauliodous and Myledalphus bipartitus.

The crurotarsans include Brachychampsa montana and Denazinosuchus kirtlandicus. Unidentified taxa are known, including the crurotarsan?

Leidyosuchus , [44] and the theropods? Struthiomimus , Troodontidae and Tyrannosauridae. Argon-argon radiometric dating indicates that the Kaiparowits Formation was deposited between The plateau where dinosaurs lived was an ancient floodplain dominated by large channels and abundant wetland peat swamps, ponds and lakes, and was bordered by highlands.

The climate was wet and humid, and supported an abundant and diverse range of organisms. Parasaurolophus shared its paleoenvironment with other dinosaurs, such as dromaeosaurid theropods , the troodontid Talos sampsoni , ornithomimids like Ornithomimus velox , tyrannosaurids like Albertosaurus and Teratophoneus , armored ankylosaurids , the duckbilled hadrosaur Gryposaurus monumentensis , the ceratopsians Utahceratops gettyi , Nasutoceratops titusi and Kosmoceratops richardsoni and the oviraptorosaurian Hagryphus giganteus.

A variety of early mammals were present including multituberculates , marsupials , and insectivorans. From Wikipedia, the free encyclopedia. Hadrosaurid ornithopod dinosaur genus from Late Cretaceous Period.

Temporal range: Late Cretaceous , Abel, Othenio Jarbuch Naturwissenschaften in German. Bibcode : NW William Morrow. Benson, R. Prehistoric Life.

Dorling Kindersley. Brett-Surman, Michael K. In Carpenter, Kenneth ed. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Bloomington and Indianapolis: Indiana University Press.

Carr, T. Journal of Vertebrate Paleontology. Colbert, Edwin H. Currie, Phillip J. Bloomington: Indiana University Press.

Clinton, William. September 18, Archived from the original on August 28, Retrieved November 9, Eaton, J.

Miscellaneous Publication , UtahGeological Survey : 1— In Gillete, David D. Vertebrate Paleontology in Utah. Miscellaneous Publication Evans, D.

Canadian Journal of Earth Sciences. Bibcode : CaJES.. Sues, Hans-Dieter ed. Farke, A. Hutchinson, John ed. Gilmore, Charles W. In Glut, Donald F.

Dinosaurs: The Encyclopedia. Hone, D. Archived from the original PDF on October 6, Hopson, J. Horner, J. In Weishampel, David B. The Dinosauria Second ed.

University of California Press. Jasinski, S. Fossil Record 3. Liddell, Henry George and Robert Scott A Greek-English Lexicon Abridged ed.

Bisher wurden drei Arten der Gattung Parasaurolophus beschrieben:. Aber auch Kiefernadeln, Zweige und Blätter wurden gefressen. Wie bei den meisten Dinosauriern ist das Skelett Parasaurolophus nur von einem unvollständigen Exemplar bekannt. Parasaurolophus Kinofilme 2019 Stream Parks, Typ Parasaurolophus tubicen Wiman, Parasaurolophus cyrtocristatus Ostrom, Die vorderen Beine, wenn Parasaurolophus denn als Beine fungierten, waren deutlich Zee One Tv und dienten beim Bücken nach Nahrung wahrscheinlich als Stütze oder er zog Äste damit zu sich herunter. Parker: Dinosaurier. Seitenkategorien : Footloose Online. Kategorien : Wikipedia:Exzellent Hadrosauridae Hadrosaurier. Der Parasaurolophus walkeri erreicht eine Gesamtlänge von zehn bis zwölf Meter, eine Höhe von bis zu vier Metern sowie ein Gewicht von vier bis fünf Tonnen. Parasaurolophus Parasaurolophus

Parasaurolophus by Various. Parasaurolophus by Galileo Nunez. Popular Dinosaurs. Popular Prehistoric Animals. Dire Wolf.

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You can read more about it here. Hone, D. Archived from the original PDF on October 6, Hopson, J. Horner, J. In Weishampel, David B. The Dinosauria Second ed.

University of California Press. Jasinski, S. Fossil Record 3. Liddell, Henry George and Robert Scott A Greek-English Lexicon Abridged ed.

United Kingdom: Oxford University Press. Longrich, N. Cretaceous Research. Lull, R. Hadrosaurian Dinosaurs of North America. Geological Society of America Special Paper Geological Society of America.

Pegasus Books. Norman, David B. New York: Crescent Books. Ostrom, J. Journal of Paleontology. Ostrom, John H. University of Toronto Studies: Geological Series.

Roberts, E. Romer, Alfred Sherwood Vertebrate Paleontology. University of Chicago Press. Sandia National Laboratories.

Archived from the original on August 17, Simpson, D. Cassell's Latin Dictionary 5 ed. London: Cassell Ltd.

Sullivan, R. In Lucas, S. Late Cretaceous vertebrates from the Western Interior. Sullivan, Robert S. Tanke, D. Mesozoic Vertebrate Life.

Indiana University Press. Titus, A. Weishampel, D. Weishampel, David B. The Dinosauria 2nd ed. CS1 maint: uses authors parameter link Wheeler, P.

Bibcode : Natur. Wilfarth, Martin Orion Munich in German. Lucas, Spencer G. Wiman, C. Xing, H. Evans, David C. Bibcode : PLoSO Zanno, L.

Dinosaurs portal Cretaceous portal Canada portal United States portal. Burianosaurus Changmiania Convolosaurus Gideonmantellia? Qantassaurus Sektensaurus?

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Prosaurolophus Saurolophus. Nomina dubia. Arstanosaurus Cionodon Claorhynchus? Diclonius Eucercosaurus? R Willinakaqe. Namespaces Article Talk.

It was a herbivore that walked both as a biped and a quadruped. The genus was first described in by William Parks from a skull and partial skeleton found in Alberta.

This genus is known for its large, elaborate cranial crest, which at its largest forms a long curved tube projecting upwards and back from the skull.

Visual recognition of both species and sex, acoustic resonance, and thermoregulation have been proposed as functional explanations for the crest. It is one of the rarer hadrosaurids, known from only a handful of good specimens.

With its snout bones drawn up into a giant snorkel-like structure, Parasaurolophus was one of the most bizarre of all the hadrosaurs.

It lacked a hole in its apex, and because of this it is clear that this bony structure was not used as a breathing apparatus while the animal was swimming or feeding underwater.

It seems more likely that it helped Parasaurolophus produce noises for signaling to mates or, if it was colored, for courtship displays.

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