In the video below we are prepping a fossil that was hiding in concretion. It was such a soft matrix that we could use a combination of a small screwdriver and a wooden toothpick to remove the siltstone to expose the crab.
In the video below we are prepping a fossil that was hiding in concretion. It was such a soft matrix that we could use a combination of a small screwdriver and a wooden toothpick to remove the siltstone to expose the crab.