This might be a subject that might have been discussed before. If it has, I am sorry. I was looking at a rock that I found that has multiple flat gastropods in the matrix. I noticed that some spiral clockwise and other spiral counter clockwise. I have done a little research on this and I am confused. Some sites talk about the different spiraling depends on whether it was north or south of the equator. Another site talks about one being a gastropod fossil and the other being a gastropod like fossil. This is not the case of a fossil and a mirrored imprint. Do I have two different species here or is it just a variation (similar to color variations on certain herps)?