The Wild Wild West

I’ve just returned from a Turonian dinosaur hunt in New Mexico! Dinosaurs from this age are extremely rare in North America (and globally as well). Sea levels were at their highest at this time and much of North America was either totally submerged under the Western Interior Seaway, or were rapidly eroding highlands that are gone today. In the United States, New Mexico is the place to be if you want to find dinosaurs from this age, so we spent two weeks checking out the Moreno Hill and Crevasse Canyon formations in the western edge of the state.

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Fortunate Son

Elsewhere in the Mesozoic, parts of the field crew were working away at Cretaceous dinosaurs in the Mussentuchit Member of the Cedar Mountain Formation. In may we worked at Crystal Geyser Quarry, which is in the Yellow Cat Member of the same formation and is about 125 million years old, in a part of the Cretaceous called the Barremian. In contrast, the Mussentuchit Member is about 98 million years old, or Cenomanian in age. The Cedar Mountain Formation is a giant unit of rock, and the dinosaur faunas changed dramatically throughout!

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