Referring to its long forelimbs, the name Brachiosaurus comes from the Greek for this "lizard"
... but its long 
neck may have enabled this sauropod to eat soft leaves on... [DOC] [TLE] Brachiosaurus - The Arm Lizard - Dinosaurs - It's Nature [PAR] The name Brachiosaurus originates as a combination of the Greek words for 'arm' 
and 'lizard', this name was given to the Brachiosaurus because due to the fact 
that its forelimbs or 'arms' were much larger ... Other unique characteristics of the 
sauropods is that of a long tail and very small brain for its size.