Hi Paul,
Clayton is right on the money, it is Petavius. The problem is the orientation of your original image. I just loaded it into IrfanView and if I do a vertical flip then rotated the image left it is then orientated correctly and matches the image posted by Clayton and also my copy of Antonin Rukl's Atlas of the Moon.
Paul, it might pay you to download IrfanView, it is freeware and an excellent little program for astro images. For positive id of detail on your future Moon images remember that you need to change the orientation of your image to make it a lot easier, being upside down and back to front makes it a lot harder.
Regards
Trevor
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