Choose a time period:
No slide show is available for the Precambrian in Oregon.
During the Precambrian, the area now occupied by Oregon was deep ocean, and no rocks from the Precambrian have been preserved anywhere in the state.
site tour | about the site | site map | site credits | page credits | help | FAQs | contact © | editorial policy | awards | teachers' guide | site generator | About RSS paleontology news: recent site additions: