What do you think a skull is? It is a data point.
A lot of skulls are a lot of data points.
The theory of evolution puts this data together following the scientific method.
This is scientific evidence.
Now you may not accept it (for religious reasons or lack of education in one of the specific fields), but that does not diminish the theory in any way. If you are not an evolutionary scientist, with a least some training in the field, your opinion is of no value.
Step by step GRADUAL EVOLVING would be the definition of evolution....where is it.....waiting...waiting. Step by step evidence....GRADUAL evolving.