Definition of "apatosaurus" [apatosaurus]

• A very large sauropod dinosaur of the genus Apatosaurus (or Brontosaurus ) of the late Jurassic Period. Apatosaurs had a long neck and tail and a relatively small head. (noun)

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• "Here over thirteen hundred footprints of the plant-eating apatosaurus a.k.a. brontosaurus and the carnivorous three-toed allosaurus, ripple marks, a few clams, a palm frond and some horsetails, fish bones, ooids have all solidified into solid rock."
• "Between them they named 130 species, doubling the number known to science, though many were so hastily identified, and based on so few bones, that they turned out to be duplicates (such as the massive herbivore apatosaurus, a.k.a brontosaurus) or mix-ups (such as the three-horned triceratops, which Marsh swore was "one of the largest of American bovines")."
• "The sauropods include many of the best known prehistoric animals, such as diplodocus and apatosaurus – the dinosaur formerly known as brontosaurus."