The quadruped walk is a vertebrate which walks on four legs. This is the basic locomotion of amphibia, reptiles and mammals. Those which walk on two legs...

habitual bipeds. Optional bipeds can move on two or four legs. Early quadruped animals used all four limbs for locomotion but many later ones are bipedal...

249 mya. The oldest Polish footprints were made by an unknown small quadrupedal animal, but slightly later footprints show that moderately large bipedal...

about 12 feet (4 m) long and about 4.8 feet (1.5 m) tall. It was a bulky quadruped that relied on its many rows of bony spikes for protection. No head is...

that it was no longer than nine metres, standing on upright legs as a quadruped. Later it was realised that all theropods were bipedal. Today is known...

early hoofed mammal with a long neck; it may have had a long trunk. This quadruped lived during the Pleistocene. Fossils of Macrauchenia have been found...

have four or six or even more. A biped is an animal with two legs and quadruped is an animal with four legs. Centipedes and millipedes have many more...

Archosauria †Phytosauria: semi-aquatic long-snouted types †Aetosauria: quadrupedal armoured herbivores †Ornithosuchidae: look rather like dinosaurs Crocodylomorpha...

very well on two legs. Birds generally are an example of the change from quadruped walk (originally as dinosaurs), to bipedalism. Humans are also examples...

also a muscle in other quadrupeds. In humans, the muscle is more complex, and allows more complex movement than in other quadrupeds. The word biceps literally...

related to Saurolophus. It was a herbivore that walked both as biped and a quadruped. It probably lived in herds. Parasaurolophus was a hadrosaur. They had...

about 3 feet (1 m) long. Bagaceratops walked on four short legs (it was a quadruped). Bagaceratops could eat tough plants; it had powerful jaws and cheek...

history, they were capable of both bipedal and quadrupedal locomotion. Several groups became entirely quadrupedal. A new hypothesis of dinosaur relationships...

Pseudosuchia †Phytosauria: semi-aquatic long-snouted types †Aetosauria: quadrupedal armoured herbivores †Ornithosuchidae: look rather like dinosaurs Crocodylomorpha...

are divided into these groups: Various early herbivores which could be quadrupedal or bipedal. Examples: the lightly armoured: Scutellosaurus, and Scelidosaurus...

Sauropodomorpha is the suborder of dinosaurs with massive, quadrupedal herbivores with extremely long necks and tails. Sauropodomorpha are divided into...

armoured dinosaurs Ankylosaurus, Stegosaurus and Huayangosaurus, were all quadrupedal. The lightly built bipedal Scutellosaurus is similar in form to the ancestral...

Later members, including Centrosaurus and Triceratops, became very large quadrupeds. They developed elaborate facial horns and a neck frill. The frill served...

titanosaurid sauropod dinosaur. It was an enormous, long-necked, long-tailed, quadrupedal, plant-eater from Argentina, South America during the Cretaceous period...

including Triceratops, Torosaurus, and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous, mainly of Western North America...

pp. 83–4. ISBN 978-1-61530-336-6. Parsons, J. (1745). "An account of a quadruped brought from Bengal and now to be seen in London". Philosophical Transactions...

of Australia. Kunbarrasaurus was a small armoured dinosaur that was quadrupedal and had a long tail. Nogrady, By Bianca (8 December 2015). "Meet Kunbarrasaurus:...

is directly correlated with locomotion ( Humans are bipedal, monkeys quadrupedal and apes are knuckle walkers. ) This short article about biology can...

vertebrate four-legged land animals. This kind of locomotion is called quadrupedal. Amphibians, reptiles, birds, and mammals are all tetrapods. Even though...

basal sauropodomorph dinosaurs Plateosaurus and Massospondylus habitual quadrupeds?. In Paul M. Barrett & D.J. Batten (eds) Evolution and palaeobiology of...

exact position in the group is still not yet agreed. It was a largely quadrupedal armoured animal from the Lower Jurassic, feeding on low scrubby plants...

Sesotho language) is a sauropodomorph dinosaur from the Early Jurassic. A quadruped, it was one of the first giant sauropodomorphs, reaching a weight of around...

first year of life. She was "an agile, nail-bearing, generalized arboreal quadruped living above the floor of the Messel rain forest". Mertz D.F. & Renne...

sauropodomorphs) †Sauropoda (very large and heavy, usually over 15 m (49 ft) long; quadrupedal) †Vulcanodontidae (primitive sauropods with pillar-like arms and legs)...

supercontinent Laurasia. Its length was about 4 metres (13 ft). Scelidosaurus was quadrupedal, with the hindlimbs longer than the forelimbs. It may have reared up...

Acantholipan was a large, armored, quadrupedal (it walked on four legs), tank-like dinosaur from Mexico. It includes one species, Acantholipan gonzalezi...

Nodosaurus (meaning "knobbed lizard") was a large, armored, quadrupedal (it walked on four legs), tank-like dinosaur. It lived in the first part of the...

family of sauropod dinosaurs, the Brachiosauridae. They were herbivorous quadrupeds with longer forelegs than hind legs. As a result, there is also some dispute...

America during the Upper Triassic period. It was a heavy, ground-dwelling, quadrupedal carnivore. Probably it was the apex predator in its territory (the Ischigualasto...

Ornithischia. Their armour was made of scutes (bony scales). They were quadrupeds with short and strong legs. Fossils of Ankylosaurs have been found on...

The tail is very short for its size. Ajkaceratops would have walked quadrupedally and eaten low vegetation. Ajkaceratops may have reached the part of...

(meaning "spiny scales") was an armoured ankylosaurian dinosaur. This quadrupedal plant-eating dinosaur had its armour in rows of oval plates set into...

Talarurus was a hippopotamus-sized, heavily built, ground-dwelling, quadrupedal herbivore. It could grow up to about 6 m (19.7 ft) long. Like other ankylosaurs...

nearly equal length of the fore and hindlimbs is also suggestive of a quadrupedal animal. "Riojasaurus." In: Dodson, Peter et al The Age of Dinosaurs....

guessed it could move on two legs, as opposed to Owen, who thought it was quadrupedal. As it happens, it probably used both modes. Slow walking would be done...

the Eurasian steppes (grasslands). Elasmotherium was a heavily-built quadruped that walked on four hoofed legs. Its legs were longer than those of other...

volume 14 he argued that all the world's quadrupeds had developed from an original set of just thirty-eight quadrupeds. On this basis, he is sometimes considered...

sauropod from the titanosaur clade, but very much smaller than usual. This quadrupedal herbivorous dinosaur lived during the Upper Jurassic (middle Kimmeridgian...

dinosaurs. Silesaurids had a relatively long neck and legs, and probably had quadrupedal behaviors. They filled a range of ecological niches. Early silesaurids...

nodosaurs, like other ankylosaurs, are medium-sized to large, heavily built quadrupedal herbivorous dinosaurs, with small denticulate teeth and rows of osteoderms...

Rapetosaurus krausei, has been found. Like other sauropods, Rapetosaurus was a quadrupedal herbivore. The discovery of Rapetosaurus was the first time a titanosaur...

they became more adapted to eating while bent over, they became semi-quadrupedal; still running on two legs, and comfortable reaching up into trees; but...

(33 feet) length, which was relatively small for a sauropod. It was a quadrupedal herbivore with a long, low skull on the end of a long neck, much like...

Torosaurus (meaning "pierced lizard") was a large, quadrupedal, plant-eating Ceratopsian dinosaur with three horns on its large head. Torosaurus hatched...

trapped in a cave by various creatures from the past, such as a semi-quadrupedal Tyrannosaurus. They fire off a signal flare. Back on the mainland near...

By 2014, some scientists believed that Spinosaurus aegyptiacus was quadrupedal because it is front-heavy. But later research suggests it could walk...

authors list (link) Flaherty E.A; M. Ben-David, W.P. Smith (2010). "Quadrupedal locomotor performance in two species of arboreal squirrels: predicting...

a smaller dinosaur, the one metre long Eoraptor. Saurosuchus, a huge quadrupedal Archosaur was the biggest land predator at the time. There were also...

more trip to the West in 1843 for his work of mammals, the Viviparous Quadrupeds of North America. It was largely completed by his sons. The text was written...

and into Mexico. As a hadrosaurid, Lambeosaurus was a large bipedal/quadrupedal herbivore, eating plants. It had a sophisticated skull that allowed a...

(bipeds), terms used are different from animals which stand on four (quadrupeds). Humans are described in the standard anatomical position, which is standing...

carnivorous Gasosaurus. Like other stegosaurians, Huayangosaurus was a quadrupedal herbivore with a small skull and a spiked tail. Huayangosaurus had the...

At the pit's bottom, the surviving sailors are attacked by a giant quadrupedal Erythrosuchus, and they try to take refuge on top of the rock, where...

His great zoological work, Historiae animalium, appeared in 4 vols. (quadrupeds, birds, fish) folio, 1551–1558, at Zürich, a fifth (snakes) being issued...

relationship between body mass and proximal limb bone dimensions in quadrupedal terrestrial tetrapods". BMC Biology. 10 60: 15. doi:10.1186/1741-7007-10-60...

Audubon, John James; Bachman, John; Audubon, John Woodhouse (1851). The quadrupeds of North America. Duke University Libraries. New York, V.G. Audubon. Hillman...

"Commodus killed a camelopardalis or giraffe...the most useless of the quadrupeds." In November 192, Commodus held Plebian Games in which he shot hundreds...

their proper colours, of 209 different Birds, and about 20 very rare Quadrupeds, Serpents, Fishes, and Insects." 1751 John Canton "On account of his communicating...

similar to a mudskipper or a seal. It could not walk the same way that most quadrupeds do because its forelimbs could not turn around enough. The ears of Ichthyostega...

Skeleton of an Iguanodon mounted in a modern quadrupedal posture in the Royal Belgian Institute of Natural Sciences in Brussels....