Trace fossils record the behavior of ancient organisms,but not necessarily their form; it is often difficult or impossible to link a given trace fossil with the precise species that made it.Nonetheless,trace fossils provide valuable data for reconstructing the history of life.Your textbook mentions that dinosaur trackways can be used to estimate living dinosaurs' speed.Generate another way in which trace fossils could contribute to paleontological studies even if the identities of their makers are unclear.