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Examination of a historic collection of isolated cranial and appendicular hadrosaurid material from the lower Kirtland Formation of the San Juan Basin, New Mexico

Published online by Cambridge University Press:  27 July 2016

Mateusz Wosik  and
Merrilee F. Guenther
Mateusz Wosik
Affiliation:
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 2C6, Canada 〈m.wosik@mail.utoronto.ca〉
Merrilee F. Guenther
Affiliation:
Department of Biology, Elmhurst College, Elmhurst, Illinois 60126, USA 〈guentherm@elmhurst.edu〉
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Abstract

The Field Museum of Natural History collection contains several isolated hadrosaurid specimens collected by Charles H. Sternberg from the lower Kirtland Formation of the San Juan Basin, New Mexico, that have been previously overlooked. Cranial elements described herein consist of a dentary and three jugals while appendicular material is limited to two humeri and two pubes. Many of the specimens preserve taxonomically informative characters that show strong affinities with Kritosaurini but are distinct from Kritosaurus navajovius (Brown, 1910) suggesting that the saurolophine-dominated San Juan Basin diversity is greater than currently recognized. Future examination of currently unprepared material will add to our developing understanding of the ambiguous hadrosaurid diversity of the San Juan Basin.

Type
Articles
Information
Journal of Paleontology , Volume 90 , Issue 4 , July 2016 , pp. 763 - 770
Copyright
Copyright © 2016, The Paleontological Society 

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