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The Triassic in Utah, US

Triassic in Utah map

Generalized geologic map from the Utah Geological Survey.

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Triassic Fossils
Fossil photos from Triassic in Utah

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Paleontology and geology

Triassic limestones in the western half of Utah were deposited in marine waters. The eastern half of the state contains red sandstones and shales deposited along the shoreline and on the floodplains of rivers further inland. Fossils in the limestones include marine organisms such as snails, clams, brachiopods, and ammonoids, while the terrestrial deposits yield the remains of freshwater sharks, bony fish, amphibians, and reptiles (lizards and the earliest dinosaurs) that lived in and along rivers, lakes, and marshes. Fossilized footprints of dinosaurs are also abundant.

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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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Field Guides (showing 1 of 1 listings)

Fossil Cephalopods in Utah: A reference to help provide information on the identity, biostratigraphy and location of fossil cephalopods found in the state of Utah.

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Image Collections (showing 1 of 1 listings)

Fossil Images from Grand Staircase-Escalante National Monument: A pictorial essay of fossil life in the Grand Staircase National Monument, unveiled by Utah Geological Survey (UGS) staff.

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