Complex sentence: There are also many smaller archeological sites in Oakland, New Jersey that were inhabited by the early tribes, areas of Oakland also contain many areas where fossilized crustaceans can be found along the banks of the river.
Split into simpler sentences: There are also many smaller archeological sites in Oakland that were inhabited by the early tribes. Areas of Oakland also contain many areas where fossilized crustaceans can be found along the banks of the river.