| New basal iguanodonts from the Cedar Mountain formation of Utah and the evolution of thumb-spiked dinosaurs. | |
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MedLine Citation:
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PMID: 21124919 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: Basal iguanodontian dinosaurs were extremely successful animals, found in great abundance and diversity almost worldwide during the Early Cretaceous. In contrast to Europe and Asia, the North American record of Early Cretaceous basal iguanodonts has until recently been limited largely to skulls and skeletons of Tenontosaurus tilletti. METHODOLOGY/PRINCIPAL FINDINGS: Herein we describe two new basal iguanodonts from the Yellow Cat Member of the Cedar Mountain Formation of eastern Utah, each known from a partial skull and skeleton. Iguanacolossus fortis gen. et sp. nov. and Hippodraco scutodens gen. et sp. nov. are each diagnosed by a single autapomorphy and a unique combination of characters. CONCLUSIONS/SIGNIFICANCE: Iguanacolossus and Hippodraco add greatly to our knowledge of North American basal iguanodonts and prompt a new comprehensive phylogenetic analysis of basal iguanodont relationships. This analysis indicates that North American Early Cretaceous basal iguanodonts are more basal than their contemporaries in Europe and Asia. |
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Authors:
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Andrew T McDonald; James I Kirkland; Donald D DeBlieux; Scott K Madsen; Jennifer Cavin; Andrew R C Milner; Lukas Panzarin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-11-22 |
Journal Detail:
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Title: PloS one Volume: 5 ISSN: 1932-6203 ISO Abbreviation: PLoS ONE Publication Date: 2010 |
Date Detail:
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Created Date: 2010-12-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101285081 Medline TA: PLoS One Country: United States |
Other Details:
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Languages: eng Pagination: e14075 Citation Subset: IM |
Affiliation:
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Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania, USA. mcandr@sas.upenn.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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