The second picture I used is an some sort of animal footprint. This is an example of a mold and casts fossil. This type of fossil there is no actual bone or replacements of a bone it's when something might have been walking or something and it left such an imprint that once other rock layers formed over it. It was still there. These types of fossil help scientists to see what some animals feet look like.
The first fossil picture I found is a picture of a original remains fossil. These types of fossils don't happen that often. You can tell when it's a original fossil because the whole animal is preserved. Woolly Mammoths are the best example of original forms like the picture here. 
I think the order in which the rocks go from oldest to youngest are 2,4,5,6,1,3. I think 2 is the oldest because it is the one that starts at the bottom but goes up a little. Then I think it goes 4 because it is a embedded fragment in between the other rocks around it. I also think 5 is an embedded fragment but because 5 is above 4 I think that means 5 is younger. After 5 I think it goes 6 because it is one of the layers closest to the top giving me a sign it is younger. Then I think the youngest rock layer is 1, because it is at the top and you could see it if you looked at the ground right now giving me a sign it is the most recent. Finally I think it is 3 because 3 is a Intrusion. And because intrusion is molten rock that has found its way upward it is most likely the youngest of all the layers.