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Science 30 April 1999:
Vol. 284. no. 5415, pp. 798 - 800
DOI: 10.1126/science.284.5415.798
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Reports
Neck Posture and Feeding Habits of Two Jurassic Sauropod Dinosaurs
Kent A. Stevens,
1
J. Michael Parrish
2
Articulated digital reconstructions of two diplodocid sauropods
revealed cervical poses and feeding envelopes. The necks of Diplodocus and Apatosaurus were nearly straight
but gently declined such that the heads, which were themselves angled
downward relative to the neck, were close to ground level in their
neutral, undeflected posture. Both necks were less flexible than
conventionally depicted, and Diplodocus was less capable of
lateral and dorsal curvature than Apatosaurus. The results
suggest that these sauropods were adapted to ground feeding or low
browsing, contrary to the view that diplodocid sauropods were high
browsers.
1 Computer and Information Science, University
of Oregon, Eugene, OR 97403, USA.
2 Biological
Sciences, Northern Illinois University, DeKalb, IL 60115, USA.
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