If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
Current time:0:00Total duration:0:59

Video transcript

their best evidence comes from a footprint record because that dinosaur footprints are very very common all over the world if you got to look at them for you can see the plots of dinosaurs moving in one direction and only moving in one direction because depict the could say well you know that this is that the mud flap right and you have a dinosaur walks in a one-day and those brother washed into the next day the steps as preserving of a number of days but in many cases you can tell by the pattern of overlap of of detracts themselves that that they were made at the same time or group of animals which uh... there are walking straight in their undulating from right to left and stuff and tracking each others so we have a pretty strong evidence that uh... several different groups of dinosaurs you're traveling fox not that they all do no mean dislike now mostly now most today that we have some animals which hurt will announce which a solitary so it's not they all did but uh... certainly have evidence of some fancy