Ankylosauria

Conservation status: Fossil Ankylosauridae Nodosauridae The Ankylosauria, less formally known as the ankylosaurians, were a group of ornithischian ("bird-hipped") dinosaurs that lived in the late Cretaceous period. They are characterised by bony plates, which protected them against predators. There have been found on every continent except Africa. The first dinosaur ever discovered in Antarctica w ...

Read more here: » Ankylosauria: Encyclopedia - Ankylosauria

Dinosaurs are vertebrate animals that range from reptile-like to bird-like.[1] Dinosaurs dominated the terrestrial ecosystem for over 160 million years, first appearing around 230 million years ago. 65 million years ago, at the end of the Cretaceous period, all non-avian dinosaurs became extinct. Dinosaurs still exist today in the line of birds (avian dinosaurs). Knowledge about dinosaurs is derived from both fossil and non-fossil records, includ ...

Including:

• Dinosaur - What is a dinosaur?
• Dinosaur - Definition
• Dinosaur - Size
• Dinosaur - Behavior
• Dinosaur - Study of dinosaurs
• Dinosaur - Classification
• Dinosaur - Order Saurischia
• Dinosaur - †Order Ornithischia
• Dinosaur - Evolution
• Dinosaur - Areas of debate
• Dinosaur - Warm-blooded?
• Dinosaur - Feathered dinosaurs and the bird connection
• Dinosaur - Evidence for Cenozoic dinosaurs
• Dinosaur - Bringing dinosaurs back to life
• Dinosaur - Discovery of probable soft tissue from dinosaur fossils
• Dinosaur - Extinction theories
• Dinosaur - Asteroid collision
• Dinosaur - The Oort cloud
• Dinosaur - Environment changes
• Dinosaur - History of discovery
• Dinosaur - In popular culture
• Dinosaur - Notes

Read more here: » Dinosaur: Encyclopedia - Dinosaur

The Dinosauria superorder was divided into the two orders Ornithischia and Saurischia by Harry Seeley in 1887. The division is based on the bird-like form of the pelvis, the possession of a predentary, details in the vertebrae and armor, and has been generally adopted. The predentary is an extra bone in the front of the lower jaw, and extends the dentary (the main lower jaw bone). The predentary coincides with the premaxilla in the upper jaw. Together they form a beak ...

See also:

Ornithischia, Ornithischia - Characteristics, Ornithischia - Systematics

Read more here: » Ornithischia: Encyclopedia II - Ornithischia - Characteristics

Dinosaurs are divided into two major orders, the Saurischia and the Ornithischia, on the basis of hip structure. Cladograms and phylogenetic definitions in this scheme are based primarily on those in The Dinosauria, Second Edition (ed. Weishampel, Dodson & Osmolska, 2004). The symbol + between taxa should be read as indicating a node-based clade defined as comprising all decendants of the last common ancestor of the "added" taxa; the symbol > ("greater than") should be read as indicating a stem-based taxon comprising all organisms shari ...

See also:

Dinosaur classification, Dinosaur classification - Another scheme

Read more here: » Dinosaur classification: Encyclopedia II - Dinosaur classification - Another scheme

Dinosaur - Definition. The superorder or clade "Dinosauria" was formally named by the English scientist Richard Owen in 1842. The term is a portmanteau derived from the Greek words deinos ("terrible" or "fearfully great" or "formidable") and sauros ("lizard" or "reptile"). Owen chose it to express his awe at the size and majesty of the extinct animals, not out of fear or trepidation at their size ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - What is a dinosaur?

Among the ankylosaurids, Euoplocephalus, was exceeded in size by only Tarchia and Ankylosaurus. Euoplocephalus was 6 meters long, and weighed about 2 metric tonnes (2.2 tons). While it was 2.4 meters (8 feet) wide, it was low-slung, with short, stout legs. The rear legs were larger than the front legs, and all four limbs were tipped with hoof-like claws. A trackway of an ankylosaur found in 1996 at Sucre, Bolivia indicates that Euoploce ...

See also:

Euoplocephalus, Euoplocephalus - Description, Euoplocephalus - Armed and armored, Euoplocephalus - Environment, Euoplocephalus - Classification and history, Euoplocephalus - Etymology, Euoplocephalus - Cladogram

Read more here: » Euoplocephalus: Encyclopedia II - Euoplocephalus - Description

The Dinosauria superorder was divided into the two orders Ornithischia and Saurischia by Harry Seeley in 1887. The division is based on the bird-like form of the pelvis, the possession of a predentary, details in the vertebrae and armor, and has been generally adopted. The predentary is an extra bone in the front of the lower jaw, and extends the dentary (the main lower jaw bone). The predentary coincides with the premaxilla in the upper jaw. Together they form a beak ...

See also:

Ornithischia, Ornithischia - Characteristics, Ornithischia - Classification, Ornithischia - Taxonomy

Read more here: » Ornithischia: Encyclopedia II - Ornithischia - Characteristics

Dinosaurs were highly successful creatures; they were the dominant land animals on Earth for over 150 million years. However, it is their sudden extinction as much as their success that has made them an enduring part of human popular culture. Hence dinosaur is sometimes used colloquially as a metaphor for people and things that are perceived to be out of date or no longer in touch with the spirit of the times, and therefore ought to be extinct. For example, members of the punk movement derided the "progressive" ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - In popular culture

Euoplocephalus lived between 65 and 70 million years ago, in the Campanian and Maastrichian ages of the late Cretaceous period. Euoplocephalus was plant eating (herbivorous) dinosaur. It had a complicated nose design (nasal structure), which indicates that it probably had a good sense of smell, and flexible legs which it might have used for digging. The stiff, low-slung dinosaur had poor teeth (weak dentition), so it must have grazed on fl ...

See also:

Euoplocephalus, Euoplocephalus - Description, Euoplocephalus - Armed and armored, Euoplocephalus - Environment, Euoplocephalus - Classification and history, Euoplocephalus - Etymology, Euoplocephalus - Cladogram

Read more here: » Euoplocephalus: Encyclopedia II - Euoplocephalus - Environment

Dinosaur fossils have been known of for millennia, although their true nature was not recognized; the Chinese considered them to be dragon bones, while Europeans believed them to be the remains of giants and other creatures killed by the Great Flood. The first dinosaur species to be identified and named was Iguanodon, which was discovered in 1822 by the English geologist Gideon Mantell, who recognized similarities bet ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - History of discovery

Dinosaur - Warm-blooded?. A vigorous debate on the subject of temperature regulation in dinosaurs has been ongoing since the 1960s. Originally, scientists broadly disagreed as to whether dinosaurs were capable of regulating their body temperatures at all. More recently, dinosaur endothermy has become the consensus view, and debate has focused on the mechanisms of temperature regulation. After dinosaurs were discovered, paleontologists first posited that they were ectothermic creatures: "terrible lizards" a ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - Areas of debate

Information on dinosaurs is obtained from a widely varying fields of study which include Physics, Chemistry, Biology, and the Earth Sciences (which also includes Paleontology). Activities include the discovery, reconstruction and conservation of dinosaur fossils and the interpretation of those fossils which enables us to better understand the evolution, classification and behavior of dinosaurs. Dinosaur - Classification. ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - Study of dinosaurs

The sudden mass extinction of the non-avian dinosaurs, which occurred around 65 million years ago, is one of the most intriguing mysteries in paleontology. Many other groups of animals also became extinct at this time, including ammonites (nautilus-like mollusks), mosasaurs, plesiosaurs, pterosaurs, herbivorous turtles and crocodiles, most birds, and many groups of mammals.[32] The nature of the event which caused this mass extinction has been extensively studied since the 1970s. At present, several related th ...

See also:

Dinosaur, Dinosaur - What is a dinosaur?, Dinosaur - Definition, Dinosaur - Size, Dinosaur - Behavior, Dinosaur - Study of dinosaurs, Dinosaur - Classification, Dinosaur - Order Saurischia, Dinosaur - †Order Ornithischia, Dinosaur - Evolution, Dinosaur - Areas of debate, Dinosaur - Warm-blooded?, Dinosaur - Feathered dinosaurs and the bird connection, Dinosaur - Evidence for Cenozoic dinosaurs, Dinosaur - Bringing dinosaurs back to life, Dinosaur - Discovery of probable soft tissue from dinosaur fossils, Dinosaur - Extinction theories, Dinosaur - Asteroid collision, Dinosaur - The Oort cloud, Dinosaur - Environment changes, Dinosaur - History of discovery, Dinosaur - In popular culture, Dinosaur - Religious points of view, Dinosaur - Notes and references, Dinosaur - General references

Read more here: » Dinosaur: Encyclopedia II - Dinosaur - Extinction theories