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A PRIMITIVE HADROSAURID FROM SOUTHEASTERN NORTH AMERICA AND THE ORIGIN AND EARLY EVOLUTION OF 'DUCK- BILLED' DINOSAURS

Title: A PRIMITIVE HADROSAURID FROM SOUTHEASTERN NORTH AMERICA AND THE ORIGIN AND EARLY EVOLUTION OF 'DUCK- BILLED' DINOSAURS.
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Name(s): Prieto-Marquez, Albert, author
Erickson, Gregory M., author
Ebersole, Jun A., author
Type of Resource: text
Genre: Text
Date Issued: 2016-03-03
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Eotrachodon orientalis gen. et sp. nov. (latest Santonian of Alabama, southeastern U.S.A.) is one of the oldest and most basal hadrosaurid dinosaurs and the only hadrosaurid from Appalachia (present day eastern North America) with a preserved skull. This taxon possesses a relatively derived narial structure that was until now regarded as synapomorphic for saurolophine (solid-crested or crestless) hadrosaurids. Maximum parsimony analysis places E. orientalis as the sister taxon to Saurolophidae (Saurolophinae + Lambeosaurinae). Character optimization on the phylogeny indicates that the saurolophine-like circumnarial structure evolved by the Santonian following the split between saurolophines and lambeosaurines but prior to the major hadrosaurid radiation. Statistical dispersal-vicariance analysis posits an Appalachian ancestral area for Hadrosauridae and subsequent dispersal of their ancestors into Laramidia (present-day western North America) during the Cenomanian.http://zoobank.org/urn:lsid:zoobank.org:pub:3AD914D2-A3A5-45FD-8C94-5EE80461FEBCSUPPLEMENTAL DATASupplemental materials are available for this article for free at www.tandfonline.com/UJVPCitation for this article: Prieto-Marquez, A., G. M. Erickson, and J. A. Ebersole. 2016. A primitive hadrosaurid from southeastern North America and the origin and early evolution of duck-billed' dinosaurs. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2015.1054495
Identifier: FSU_libsubv1_wos_000372953300019 (IID), 10.1080/02724634.2015.1054495 (DOI)
Keywords: Anatomy, china, dispersal-vicariance analysis, historical biogeography, homologies, lambeosaurine dinosaurs, nasal cavity, ornithischia, ornithopoda, phylogenetic position
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.1080/02724634.2015.1054495
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000372953300019
Owner Institution: FSU
Is Part Of: Journal of Vertebrate Paleontology.
0272-4634
Issue: iss. 2, vol. 36

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Prieto-Marquez, A., Erickson, G. M., & Ebersole, J. A. (2016). A PRIMITIVE HADROSAURID FROM SOUTHEASTERN NORTH AMERICA AND THE ORIGIN AND EARLY EVOLUTION OF 'DUCK- BILLED' DINOSAURS. Journal Of Vertebrate Paleontology. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000372953300019