brachiosaurid
/ˌbrakɪə(ʊ)ˈsɔːrɪd/Palaeontology
adjective
Designating tall sauropod dinosaurs of the family Brachiosauridae, of the Late Jurassic to Late Cretaceous, which were massive quadrupedal herbivores with long forelimbs and necks and short hindlimbs and tails; of or relating to this family.
noun
A brachiosaurid dinosaur.
Origin
1920s. From scientific Latin Brachiosaurus Brachiosaurus + -id, after scientific Latin Brachiosauridae, family name.