Marsh systems allowed people in some parts of Utah to live in year-round settlements adjacent to the marshes. It is illegal to collect artifacts from sites on federal or state lands. It is illegal to take anything from private land without the permission of the landowner. Removing artifacts from sites disrupts the archaeological record because the artifact is removed from its context. Collecting artifacts is a huge problem in Utah.
Some archaeological sites are no longer visible because all the artifacts have been collected.
No, archaeologists deal only with material left by human beings. Paleontologists are the scientists who study dinosaurs and fossils. Dogs were sometimes used as a food source in prehistoric Utah. Different groups buried their dead in different ways and in different places. Middens are areas where trash and debris were placed, but it is also a place where the dirt is soft and easy to dig.