Neck posture and feeding habits of two Jurassic sauropod dinosaurs

Articulated digital reconstructions of two diplodocid sauropods revealed ce rvical poses and feeding envelopes. The necks of Diplodocus and Apatosaurus were nearly straight but gently declined such that the heads, which were t hemselves angled downward relative to the neck, were close to ground level in their neutral, undeflected posture. Both necks were less flexible than c onventionally depicted, and Diplodocus was less capable of lateral and dors al curvature than Apatosaurus. The results suggest that these sauropods wer e adapted to ground feeding or low browsing, contrary to the view that dipl odocid sauropods were high browsers.