Chapter IV—The Mesozoic Era 21
Remnants of Younger Strata—Red Butte and Cedar Mountain 21 The Petrified Forest 22 Dinosaur Tracks—The Painted Desert 24 The Rocks of Zion Canyon and Rainbow Natural Bridge 26 From Seashells to Coalbeds 27
Remnants of Younger Strata—Red Butte and Cedar Mountain 21 The Petrified Forest 22 Dinosaur Tracks—The Painted Desert 24 The Rocks of Zion Canyon and Rainbow Natural Bridge 26 From Seashells to Coalbeds 27