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Triceratops
Related Category: Vertebrate Zoology
(trsr´tps) [Gr., = three-horn face], genus of ornithischian quadruped dinosaurs of the late Cretaceous period.
Triceratops's head was its most imposing feature. It measured 4 to 5 feet (1.2 to 1.5 meters) across and was ornamented with impressive horns and a head plate.
A dinosaur skeleton, Triceratops horridus
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Where are they found? Africa, Antarctica, Asia, Australia, Europe, Greenland, North America, South America ...
The pachycephalosaurs were bipeds with dome-shaped skulls, while the four-footed ceratopsians, such as Triceratops, had a broad bone protecting the head and neck and a long horn or horns projecting from the skull.
(pronounced ik-thee-ORN-is) Ichthyornis (meaning "fish bird") was a tern-like, extinct bird that lived alongside dinosaurs like T. rex and Triceratops. It lived in flocks, nested on shorelines, and hunted for fish in Cretaceous seas.
The late Maastrichtian rocks contain the largest members of several major clades: Tyrannosaurus, Ankylosaurus, Pachycephalosaurus, Triceratops and Torosaurus,[64] which suggests food was plentiful immediately prior to the extinction.
 See also: Dinosaur, Reptile, Lizard, Stegosaurus, Tyrannosaurus
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