A bit of a further expansion of my last question. I am looking for alternatives to regular bone of earth (hydroxyapatite) because my superearth would have about 50% more gravity than that of earth. While 50% probably isn't enough to force animals to use other bone compositions, I'd rather take an "odd" route with my creatures instead. Bones would have to be:
- Biologically possible
- Compatible with the organism's immune system
- Have weird traits, color, formation, impact on the body etc!
I was thinking something akin to dentin, being found in our teeth. Density doesn't matter for me, as long as it doesn't reach lead-levels. Along with that, I'd rather use something that has some interesting properties, like pyrite, which oxygizes in a matter of days, or silica, which is rather transparant. Heck, even some biological "plastics" would work! If you do however, have a more speculative material/composition, please note where/how organisms could utilise/find it! The atmosphere is rather earthlike in composition, although it is quite a bit denser if that makes a difference. If possible, it shouldn't be something too earthlike, but it should still be viable and common throughout other worlds. Thank you in advance, feel free to ask any questions!