apatosaurus

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a·pat·o·saur·us

 (ə-păt′ə-sôr′əs) or a·pat·o·saur (ə-păt′ə-sôr′)
n.
A very large herbivorous sauropod dinosaur of the genus Apatosaurus of the Jurassic Period, having a long neck and tail and a small head.

[New Latin Apatosaurus, unreal lizard, genus name : Greek apatē, untruth, lie + Greek sauros, lizard.]

a·pat·o·sau·rus

(ə-păt′ə-sôr′əs) or a·pat·o·saur (ə-păt′ə-sôr′)
A very large sauropod dinosaur of the late Jurassic Period, having a long neck and tail and a relatively small head. See Note at brontosaurus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.apatosaurus - huge quadrupedal herbivorous dinosaur common in North America in the late Jurassicapatosaurus - huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
sauropod, sauropod dinosaur - very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal
genus Apatosaurus, genus Brontosaurus - large quadrupedal herbivorous dinosaurs with very long neck and tail; late Jurassic
References in periodicals archive ?
Widely-cited estimates for the mass of apatosaurus louisae, one of the largest dinosaurs, may be double that of its actual mass, say the researchers.