Tips for making a cast from a dinosaur print?

[Eric9799]

Hi I found this dinosaur foot print sadly missing a toe. But i want to make a cast from it. Anyone know what product I could use? I thought about plaster but I’m afraid of it getting stuck and damaging the print.

thanks for any help!

[jpc]

yeah, don't use plaster, any little overhang and it either will not come out, or it will break either the plaster or the footprint.  Silicone is the best, but it is not cheap.  Latex is good but takes a long time... many layers painted onto the surface.    

[Fossildude19]

Can't help with the casting question, but that doesn't look like a dinosaur footprint to me. 

[Eric9799]

31 minutes ago, Fossildude19 said:

Can't help with the casting question, but that doesn't look like a dinosaur footprint to me. 

Really? Well I might be wrong, but it looks like the footprints I’ve seen in the local paleontologist archive. The place I hunt is known for footprints.

 

Here are some locally found prints. And mine highlighted. Mine is missing part of the print but to me it has close resemblance to the other's. 
 

but still I might be totally wrong😅

Edited Wednesday at 09:01 PM by Eric9799
Added reference pictures.

[Eric9799]

1 hour ago, jpc said:

yeah, don't use plaster, any little overhang and it either will not come out, or it will break either the plaster or the footprint.  Silicone is the best, but it is not cheap.  Latex is good but takes a long time... many layers painted onto the surface.    

Thanks!