ancient footprints

• fossilsPreserved ancient organism traces
• tracksMarks showing passage
• prehistoricBefore documented civilization
• dinosaurExtinct Mesozoic reptile
• traceMinute remnant or pursue

imprint · sediment · preserved · hominid · mud · stone · archaeology · walking · trail · excavation · paleontology · discovery · ash · volcanic · gait · ancestors · million years · bipedal

• fossil footprintsdinosaur tracks, dinosaur footprints, trackways, trace fossils