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Description of a nearly complete juvenile skull of diplodocus (Sauropoda: Diplodocoidea) from the Late Jurassic of North America

Whitlock, JA and Wilson, JA and Lamanna, MC (2010) Description of a nearly complete juvenile skull of diplodocus (Sauropoda: Diplodocoidea) from the Late Jurassic of North America. Journal of Vertebrate Paleontology, 30 (2). 442 - 457. ISSN 0272-4634

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Abstract

More than any other sauropod dinosaur group, the long-necked herbivores belonging to Diplodocoidea have been defined by their skulls. Their unique skull shape, which is extremely elongate antorbitally, with a transversely broad, square snout packed at its anterior extreme with narrow-crowned, pencil-like teeth, has served as a touchstone for describing the biology of these animals ever since the discovery of the first skull in the late 19th century. In particular, the unusual diplodocoid skull has been discussed frequently in the context of examining feeding behavior, spawning hypotheses ranging from branch stripping, propalinal shearing, and aquatic plant 'grazing.' Here, we describe a juvenile skull of Diplodocus (Carnegie Museum 11255) that does not share the unusually blunted snout and anteriorly sequestered teeth seen in adult specimens, suggesting that adults and juveniles may have differed greatly in their feeding behavior, an ontogenetic distinction that may be unique among sauropodomorphs. © 2010 by the Society of Vertebrate Paleontology.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Whitlock, JA
Wilson, JA
Lamanna, MC
Date: 1 March 2010
Date Type: Publication
Journal or Publication Title: Journal of Vertebrate Paleontology
Volume: 30
Number: 2
Page Range: 442 - 457
DOI or Unique Handle: 10.1080/02724631003617647
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Refereed: Yes
ISSN: 0272-4634
Date Deposited: 22 Apr 2014 16:55
Last Modified: 02 Feb 2019 14:55
URI: http://d-scholarship.pitt.edu/id/eprint/21369

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