The lower jaw of Atlasaurus is about  long, the neck was about  long, the humerus  long, and the femur about  long. It has been estimated at  in length, and  in weight.
The lower jaw of Atlasaurus measured roughly  long, its neck was around  long, its humerus was  long, and its femur was approximately  long. Based on estimations, it is believed to have reached a length of  and weighed  .