Yes
The tiny speck is not a Martian rock.
If you magnify the speck, it looks like it is upright, at least the shadow seems to indicate that.
If it is upright, then it is interesting as to how it landed in that position, assuming that it came from the rover or the landing of all the equipment.
Then on the other hand, since we are assuming that it came from Earth, rather than being from Mars, we can ignore it and forget about it.
The question remains though: Do we know what the flora and fauna on Mars looks like, or may have looked like during the wet times?