There use to be oceans on Mars when it was in a different orbit. So when they evaporated off, a lot of the sea arachnids as well as other crawling species, went into caved systems below ground.behold....
Didnt that pic come out a few years ago now? old stuff.
Yes, you're right.
Probably an arachnid of some kind. Could be living or dead. But if one looks closer, it looks as if there's a picture on the back of it's shell. I'm not trying to get wise, or make fun of, but the picture looks a little Steve Chiverton wearing a mustache with a pompadour hair-do.It's hard to tell how big that thing is. It's fairly small when compared to the whole picture.
I agree it looks like a crab or dried up animal corpse, but I'm pretty sure it's just rocks.