undifferentiated rock units
Choose a time period:
No slide show is available for the Cambrian in Oregon.
During the Cambrian, the area now occupied by Oregon was covered by the sea, and no Cambrian rocks 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: