An Aetosaur (reptilia:archosauria) from the Upper Triassic Chinle Group, Canyonlands National Park, Utah
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چکیده
A partial skeleton of the aetosaur Stagonolepis sp. is the first tetrapod body fossil recovered from Upper Triassic strata in Canyonlands National Park. The specimen consists of a partial tooth and numerous disarticulated vertebrae, ribs, and scutes found in the Blue Mesa Member of the Petrified Forest Formation (Chinle Group) near Upheaval Dome. Stagonolepis is an index taxon of the Adamanian land-vertebrate faunachron, and indicates a late Carnian (228-218 Ma) age for the Blue Mesa Member in Canyonlands National Park, an age supported by lithostratigraphic and biostratigraphic correlations to other Stagonolepis-bearing strata. ____________________
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A New Aetosaur from the Upper Triassic (adamanian: Carnian) of Arizona
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