Ankylosaur


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Related to Ankylosaur: Spinosaurus

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 ?
The discovery of johnsoni also showed how ankylosaurs had more diverse appearances than paleontologists first thought.
The powerful tail clubs and bony armor were features common to ankylosaurids, a group of ankylosaurs that were bulky quadrupeds with short limbs and mainly herbivorous.
He thinks the club of one kind of ankylosaur looked like a head to its enemies.
She explained that between 1900 and 1930 researchers determined that small variations in the skull armour and the tail clubs in some ankylosaurs constituted four individual species of the dinosaurs.
Mallon said he is hoping to see scutes, or bony plates or scales that were on the skin of ankylosaurs.
Titanosaurian sauropods are the best represented dinosaurs in number of specimens, followed by theropods (mostly teeth), ankylosaurs, and ornithopods.
The Colorado ankylosaur belongs to the family Nodosauridae--passive, plant-eating animals built like fortresses.
In these areas, the deposits of late Campanian to latest Maastrichtian age have yielded a diverse and abundant tetrapod fossil record that comprises dinosaurs (sauropods, theropods, ornithopods and ankylosaurs; LopezMartinez et al., 2001; Riera et al., 2009; Pereda-Suberbiola et al., 2009; Cruzado-Caballero et al., 2010; Vila et al., 2012; Prieto-Marquez et al., 2013; Torices et al., in press), pterosaurs (Dalla Vecchia et al., 2013), crocodilians (Puertolas et al., 2011; Puertolas-Pascual et al., 2014), turtles (Marmi et al., 2012), and amphibians and squamate reptiles (Blain et al., 2010).
(2001): Global distribution of purported ankylosaur track occurrences.
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.