Parking's cut into land for amphibian (8)
I believe the answer is:
terrapin
'amphibian' is the definition.
(terrapin is a type of amphibian)
'parking's cut into land' is the wordplay.
'parking' becomes 'p'.
'cut into' means one lot of letters goes inside another.
'land' becomes 'terrain' (I've seen this before**).
'p' going into 'terrain' is 'TERRAPIN'.
'for' acts as a link.
(Other definitions for terrapin that I've seen before include "Aquatic tortoise" , "Web-footed turtle" , "temporary building" , "Water tortoise" , "freshwater creature" .)