At 20:00:55 UTC, 11:46:10 local daylight time, Mastcam Right captures this rock of great interest.
As usual, the original image has been subjected to white balance and a slight increase in color saturation and contrast.
In the rock in the foreground, but not only, there are layers and textures that are anything but regular, which would require a very thorough analysis.
Even, according to Luigi Bignami (see post https://www.facebook.com/photo.php?fbid=10210906869657034&set=a.10202431362694657.1073741829.1511498797&type=3) the photo would show structures much more similar to fossils than to simple sedimentary or volcanic structures.
Obviously, the seriousness and culture of Dr. Bignami lead him to propose his opinion from a hypothetical and questionable point of view, a sign of a great professional seriousness that I appreciate and admire!
However, I would like to emphasize that I personally share fully the observations of Dr. Bignami, which is why I propose this processed version in which you can better appreciate the details described in his post.
HD processed image: https://image.ibb.co/d5sQDc/Curiosity_Sol2029_01.jpg
Original image (raw): https://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=2029MR0107090010902961E01_DXXX&s=2029
This post has been automatically translated. See the original post here.