science part of the trace fossil is on display in the museum of natural history in the castle batons books noising and it s arguably the most beautiful plate showing 3 crossing tracks. in the 19th century people didn t really understand how these pictures walked if you put your hand on the print you can see your thumb if it s really well here. been taking the position of the tracks into account it became clear that the suppose a dog was actually a little finger if the clarifying long would this be the researchers surmise the creatures must have walked criss cross cloyd s which didn t really seem natural to us why that s why people were always very uncertain what kind of animals produced these curious drugs life. with you would give you some. sort. from 8 133-2851 about 20 different scientific papers were written about them.