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Sauropod: A long-necked, long-tailed plant-eating dinosaur with pillar-like limbs. Saurischi-ans include the generally meat-eating theropods such as Allosaurus and Tyrannosaurus, and the long-necked, herbivorous sauropods such as Apatosaurus and Diplodocus. Saurischian: Dinosaur whose hip configuration superficially resembles that of lizards. Paleontologist: A scientist who searches for and/or studies fossils to reconstruct the history of life on Earth. Ornithischians include familiar dinosaurs like Stegosaurus, Triceratops, and Dryosaurus. Ornithischian: Plant-eating dinosaur whose hip configuration superficially resembles that of birds.
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Mesozoic: The Age of Dinosaurs, from 66 to 251 million years ago, with three distinct periods: the Triassic, Jurassic, and Cretaceous. The museum’s collection of Jurassic dinosaurs is one Jurassic: The middle period of the Age of Dinosaurs, 146-200 million years ago.
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Holotype: A specimen that forever defines a species, usually the first or the most complete specimen discovered. Dinosaurs were the only archosaurs that stood upright.Įcosystem: The complex of a community of organisms and its environment functioning as an ecological unit.įauna: Animals characteristic of a region, period, or special environment.įlora: Plants, fungi, or bacteria characteristic of a region, period, or special environment. Along with crocodiles and flying reptiles, dinosaurs are members of a reptilian sub-group called archosaurs, or ruling reptiles. Cretaceous: The final period of the Age of Dinosaurs, 66-146 million years ago.ĭinosaur: Like today’s turtles, lizards, snakes, and crocodiles, dinosaurs were reptiles.