Ceratopsia

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Ceratopsia

[‚ser·ə′täp·sē·ə]
(paleontology)
The horned dinosaurs, a suborder of Upper Cretaceous reptiles in the order Ornithischia.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ceratopsia

 

(horned dinosaurs), a suborder of reptiles of the order Ornithischia. Horned dinosaurs lived during the Late Cretaceous in Central Asia (the most ancient representatives) and in South and North America. They resembled rhinoceroses and had a body length to 6 m. The neck was encircled by a “frill” of proliferated skull bones. The frill served as protection against predators. The majority of ceratopsians had between one and five horns on the head and, sometimes, accessory bony spines along the edges of the frill. The anterior portion of the jaws formed the “bill.” The teeth were arranged in several rows and served for grinding plant substances. The anterior cervical vertebrae, which supported the heavy skull, were usually concresced. The feet were hoofed. Horned dinosaurs lived in the forest steppe and in meadows near water. They were among the last dinosaurs, becoming extinct at the end of the Cretaceous.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
"It can now provide us with a better picture of the starting point for the changes between bipedal and quadrupedal ceratopsians," adds Morschhauser.
This paper deals specifically with the issue of gait in ceratopsian dinosaurs.
"If sexual selection is indeed the driver of ornament evolution in ceratopsians, as we are increasingly confident it is, demonstrating it through different lines of evidence can provide a crucial window into tracing its effects over potentially huge timescales," Knapp added.
The length of the chord of the arc of the track is approximately 25 cm, which is approximately half the size of purported ceratopsian manus tracks found west of Denver, Colorado, USA attributed to the 10 m long Maastrichtian Triceratops (Lockley and Hunt, 1995).
Johnson says that Torosaurs, Triceratops and probably all ceratopsian dinosaurs had sprawling lizard-like forelimbs after all, and therefore could not gallop.
Rigby proposes that horns were arranged to protect against accidental injuries to the ceratopsian frill -- a thin layer of bone sticking out from the back of the skull like a huge shield.
"It coexisted with two other groups of horned dinosaurs (ceratopsians): centrosaurs and chasmosaurs.
Famous dinosaurs in that area included predatory tyrannosaurs, the duck-billed hadrosaurs, heavily armored ankylosaurs, and horned dinosaurs known as ceratopsians. Crocodiles and turtles were also common.
The armored Stegosaurus is here, as well as the homed and frilled Ceratopsians and a Pachycephalosaur with its huge helmet of bone.
Past studies suggest that horned dinosaurs such as Triceratops and their relatives, a group known as ceratopsians, lived in herds and used the frills on their skulls and other ornamentations to identify members of their own species, as did many other dinosaurs (SN: 8/13/05, p.
In Alberta's Dinosaur Provincial Park, a bone bed of Centrosaurus --one of the ceratopsians, horned dinosaurs--has been worked by Philip Currie and others from the Tyrrell Museum of Palaeontology.
Other quadrupedal dinosaurs like stegosaurs (Galton and Upchurch, 2004) or ceratopsians (Dodson et al., 2004) have not been described yet (neither by osteological or ichnological remains) from the Aptian-Turonian of Europe, so we assume that these dinosaurs are not candidates to be the trackmakers of Parede.