CNHA



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About CNHA

Canyonlands Natural History Association is a nonprofit organization established to assist the scientific and educational efforts of the National Park Service, Bureau of Land Management, and the USDA Forest Service in southeast Utah.

Photo: Moab Information Center
Excavation of New Fossil Vertebrates Localities in the Upper Jurassic and Upper Cretaceous Cedar Mountain Formation (BLM)

Principal Investigator: Lindsay E. Zanno, Ph.D., Director, Paleontology & Geology Research Lab, NCMNS; Assistant Research Professor, Biological Sciences, NCSU.

Dinosaurs of the "mid-Cretaceous" (late Early through early Late Cretaceous) are extremely rare worldwide. North America preserves one of the few opportunities to discover and document these poorly understood ecosystems. One of the most fossiliferous rock formations spanning the mid-Cretaceous in North America is the
Cedar Mountain Formation (CMF), which spans the Aptian through Cenomanian (125-98 million years ago) and crops out between western Colorado and central Utah. The CMF has been subject to intensive work over the past two decades. This work has revealed the presence of multiple dinosaur faunas previously unknown to science and changed the way we view dinosaur evolution on the continent. In particular, characterizing these dinosaur faunas are important because: 1) they clarify the transition between the extremely well sampled ecosystems of the Late Jurassic and the Late Cretaceous, and 2) they provide data testing the hypothesis that a land bridge formed between Asia and North America during this time, allowing dinosaurs to disperse between these continents.



Excavation of New Fossil Vertebrates Localities in the Upper Jurassic and Upper Cretaceous Cedar Mountain Formation (BLM)
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