Usually, the animals that are not preserved are the ones that are not extinct, such as like sharks...
There's plentiful of sharks. Nasty creatures.
Bit my arm off.
ammonites
A bison would be preserved because of it's endangered species.
I would probably say,.... a frog.
Preserved animal tracks are called trace.
i dont noo
coprolite
fossil
Its bones.
Trace fossil
In order to know which of these animal parts is most likely to be preserved as a fossil one needs to know the available choices for answers.
Aquatic
a fossil