Although footprint fossils can not preserve the complete morphology of organisms like solid fossils, we can analyze the general morphological and behavioral characteristics of organisms from footprint fossils. In other words, when there is a lack of direct evidence, we can only use indirect evidence-footprint fossils to speculate about the environment, which animals left footprints, whether they have complex animal behavior and so on. 
The footprint fossils of the transition period from Precambrian to Cambrian are of more research value than physical fossils
 during the transition period from Precambrian to Cambrian, footprint fossils are particularly important.