Is it possible to create a pointer to a class in C++

This is not possible. C++ has three types of pointers:

1. Pointers to objects
2. Pointers to functions
3. Pointers to class members.

Classes are none of the above.

I assume, that classes exist somewhere in the Ram

Classes do not exist at run-time, so you cannot take a pointer to a class.

Only objects exist at run-time.