I found this image, which looks like a fossilized shell of some sort. But it's on Mars. I'm trying to figure out what we can say (scientifically) one way or another, how it would be formed
geologically.


https://mars.nasa.gov/mer/gallery/all/2/n/075/2N133025435EFF21CEP1950L0M1.HTML
https://mars.nasa.gov/mer/gallery/all/2/n/075/2N133028174EFF2200P1827R0M1.HTML
geologically.


https://mars.nasa.gov/mer/gallery/all/2/n/075/2N133025435EFF21CEP1950L0M1.HTML
https://mars.nasa.gov/mer/gallery/all/2/n/075/2N133028174EFF2200P1827R0M1.HTML