fossilisation การใช้

:I presume a mechanism akin to fossilisation.
This form of fossilisation is called carbonisation.
Ticks had evolved by the Cretaceous period, the most common form of fossilisation being immersed in amber.
However, this is now thought to result from the loss of the wall separating paired guard cells during fossilisation.
Other features originally used to distinguish the species have been recognised as the results of the deformation of the skull after fossilisation.