Distribution, age and correlation of Cretaceous fossil vertebrates from Arizona

ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
Andrew B. Heckert Ph.D., Professor (Creator)
Appalachian State University (ASU )
Web Site: https://library.appstate.edu/

Abstract: Fossil vertebrates of Cretaceous age are known from two principal areas in Arizona—the Lower and Upper Cretaceous strata of the Basin and Range of southeastern Arizona and the Upper Cretaceous strata of the Black Mesa Basin on the Colorado Plateau in northeastern Arizona. Cretaceous fossil vertebrates, especially dinosaurs, from southeastern Arizona can be summarized as encompassing largely isolated records, mostly from Lower Cretaceous strata, and a single diverse assemblage from one Upper Cretaceous collecting area. These fossils can be assigned to two temporal intervals: (1) Albian records from the upper part of the Bisbee Group in the Empire, Whetstone and Mule Mountains, including the ornithopod “Tenontosaurus” and the sauropod Sonorasaurus thompsoni Ratkevich; and (2) Campanian records, including titanosaurs, hadrosaurs, ceratopsians, dromaeosaurs, and tyrannosaurs from the Fort Crittenden Formation in the Santa Rita Mountains, and the “Tucson Mountains dinosaur,” a hadrosaur from the Tucson Mountains. In the Black Mesa basin of northeastern Arizona, late Cenomanian- middle Turonian records of vertebrate fossils are mostly of selachian teeth but include a few records of marine turtles, crocodilians, plesiosaurs and mosasaurs.

Additional Information

Lucas, S.G., and Heckert, A.B., (2005) Distribution, age and correlation of Cretaceous fossil vertebrates from Arizona. New Mexico Museum of Natural History and Science Bulletin 29, p. 105-110. (ISSN 1524-4156) Archived in NC DOCKS with permission of the editor. The version of record is available at: http://econtent.unm.edu/
Language: English
Date: 2005

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