subfossil
/ˈsʌbfɒsl/noun
An organism, or a part of one, which has been partly fossilized.
- Most subfossils are found in Quaternary deposits; a few result from unusual conditions in older deposits..
adjective
Partly fossilized; buried or embedded in a deposit but not fully petrified.
Origin
Early 19th century (in an earlier sense). From sub- + fossil.