An example of a water genus is the Sea scorpion genus Hibbertopterus. The majority of fossil trackways will be foot impressions on land, or subsurface water, but other types of creatures will leave their distinctive species impressions. Examples of creatures supported, or partially supported, in a water environment are known. The fossil "millipede-type" genus Arthropleura left its multilegged/feet trackways on land. Some basic fossil trackway types: