English: This image shows the upper beds of the Rock Point Formation near Youngsville, New Mexico, USA. The Rock Point Formation is a Triassic siltstone formation famous for its dinosaur quarries. This sections shows numerous rhizoliths, or root traces, in the upper part of the bed, suggesting it is a paleosol or fossil soil.
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Captions
Bed of concretions in the Rock Point Formation near Youngsville, New Mexico, USA