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The Triassic in Arizona, US

Triassic in Arizona map

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Triassic Fossils

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Paleontology and geology

Extensive lowlands dominated the Arizona landscape during the Triassic Period. Forests with giant trees provided a variety of habitats for both plants and animals. Large, armored reptiles, such as Desmatosuchus, browsed the vegetation, and early dinosaurs left their bones and tracks in the Triassic sediments. Remnants of the giant conifers from this time can now be seen as fossil logs weathering out of the sedimentary rocks in Petrified Forest National Park.

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Education and Exhibits | Research and Collections | Resources

Education and Exhibits

Events and Programs (showing 1 of 1 listings)

Rockin' Through the Ages: From Fossils to Petroglyphs: Petrified Forest National Park's curriculum-based education program allows students to explore both paleonotology and archeology using in-class lessons and a field trip to the park. 

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Research and Collections

Researchers (showing 1 of 1 listings)

Francois Therrien PaleoProfile: Therrien worked in the Triassic formations of Petrified Forest National Park in Arizona, specializing in dinosaurs.

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Courses and Lectures (showing 1 of 1 listings)

Paleogeography of the Southwestern U.S.: The paleogeography of the southwestern U.S. from 1.8 billion years ago to 10 million years ago. Text and images by Dr. Ron Blakey from Northern Arizona University.

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