Answer:
Both study bones.
Step-by-step explanation:
The similarity between a doctor and paleontologist is that both study bones. A medical doctor deals with human life, a paleontologist studies the remains of preserved dead organisms in nature.
In both professions, it is common to encounter bones of the subject. A good knowledge of bone anatomy is important for recommendation of treatment. The bone structure can be used by a paleontologist to make very important deductions about how an organism once lived.