^Much like the Jackalope, it is just hard to know if it really exists. It's not even in the wikipedia list of genres because it's not a genre. I'd define it as old and stuffy. But that would be me just trying to start a fight.
Now I've got to get back to Pride and Prejudice and A Journey to the Center of the Earth. I would classify those as period fiction and fantasy/science fiction. But your mileage may vary on those classifications.