It seems that plates from their shells are the most likely part of a Snapshell to remain behind after combusting, which is perfect for my research. If you could bring me 25 of these, it would help a great deal.
Some Mimics have found a way to protect themselves from us, including those armored Snapshells in the Hatchwood Wilds. When they retract into their shells, it seems nothing can damage them. I could use any remains that are left by combusting Snapshells for my research.