Ankylosaur

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Ankylosaur

 

armored dinosaur, suborder of the Ornithi-schia order of dinosaurs, characteristic of the Cretaceous period. Ankylosaurs were large (up to eight or nine meters long), herbivorous, four-legged reptiles. The body was broad and thick, protected from above by bony spines or shields that were joined in some ankylosaurs into a solid coat of armor, hence their other name. There were often sharp spikes at the end of the tail, which served as an active means of defense against predatory dinosaurs. Remains of ankylosaurs have been found on all the continents except Australia and Antarctica, but mainly in the Cretaceous layer of North America, Europe, and Asia. In the USSR they have been found in Central Kazakhstan and Kyzylkum.

REFERENCE

Osnovy paleontologii. Vol. 12: Zemnovodnye, presmykaiushchiesia i ptitsy. Moscow, 1964.

A. K. ROZHDESTVENSKII

References in periodicals archive ?
Paleontologists from Canada's Royal Ontario Museum (ROM) discovered the remains of a new species of dinosaur in the Judith River Formation of northern Montana, an ankylosaur that resembles the fictional monster Zuul from the 1984 movie, "Ghostbusters.
These vertebrate fossil assemblages are mainly dominated by titanosaurian sauropods, rhabdodontid ornithopods, nodosaurid ankylosaurs and dromaeosaurid theropods among dinosaurs, alligatoroid crocodyliforms, bothremydid and solemydid turtles, and zhelestid mammals.
Victoria Arbour visited dinosaur fossil collections from Alberta to the UK, examining skull armour and comparing those head details with other features of the fossilized ankylosaur, a family of squat, armour plated, plant eaters, remains.
Canadian Club," an ankylosaur, took 36 percent of the votes cast.
Amateur and professional paleontologists on a dig in Colorado last summer found the specimen in 142-million-year-old rocks from the late Jurassic period, making it the oldest known ankylosaur in North America, says excavation leader James Kirkland, who announced the discovery this week.
The Colorado ankylosaur belongs to the family Nodosauridae--passive, plant-eating animals built like fortresses.
2009) distinguished between sauropod and ankylosaur tracks from the Aptian of Italy on the basis of heteropody and footprint rotation.
Furthermore, the general morphology of the tracks (subtriangular pes impressions and kidney-shaped to semicircular manus impressions) is more consistent with the interpretation of a sauropod origin than an ankylosaur one.
Despite the fact that some ankylosaur trackways are also narrow-gauge (Petti et al.
2014): Metatetrapous valdensis Nopcsa, 1923 and the presence of ankylosaur tracks (Dinosauria: Thyreophora) in the Berriasian (Early Cretaceous) of Northwestern Germany.