https://www.rt.com/viral/364835-mars-alien-fossils-photos/
(https://img.rt.com/files/2016.10/original/581733c8c361881f628b4617.png)
The thing in the rock that looks like '27', on the video.
There are many photos in NASA archives that show what any rockhound would clearly identify as a fossil :P
This one for example
(http://www.thelivingmoon.com/43ancients/04images/Mars/2P127793693EFF0327P2371L7M1.JPG)
THIS one also
(http://www.thelivingmoon.com/43ancients/04images/Mars4/Spirit_Sol_1144/Soll1144_Spirit_001_Turritella.png)
(http://www.thelivingmoon.com/43ancients/04images/Mars4/Spirit_Sol_1144/Soll1144_Spirit_001a.png)
(http://www.thelivingmoon.com/43ancients/04images/Mars4/Fossils/Rotelli/More_001.png)
(http://www.thelivingmoon.com/43ancients/04images/Mars4/Fossils/Rotelli/Clip_004a.png)
(http://www.thelivingmoon.com/43ancients/04images/Mars4/Fossils/Rotelli/Clip_004b.png)