Only link Child and Grand-Child pages?

Well, in my case I have a taxonomy which sorts a great deal of my site into

-Animation Types
-Animation Series
-Countries
-Research Subjects
-Studios
-Timeline

Lower level taxonomies might look like

-Studios
– Columbia Pictures
– Hanna Barbera Studios
– Paramount Studios
– Fleischer Studios
– Universal Studios
– Walt Disney Studios
– Pixar Animation Studios
– Warner Bros.

In this case, and in others, I don’t want the top-level of the taxonomy, “Studios,” to be navigable. I don’t want people to be able to see all posts that have any studio associated with them because it isn’t a useful query. I would, however, like them to view all posts associated with child and grandchild terms – some posts might only be attached to “paramount studios” and not as a lower level term.

In other areas this is even more important – I have a timeline which breaks up everything into decades (1890s, 1900s, 1910s, etc) and then has lower level taxonomies for years (1890, 1891, 1892, etc). I want people to be able to browse by decade or year but not by the “Timeline” taxonomy itself.

Thanks so much for the reply. If there is a way I can achieve this than that would be preferable – even if I could introduce a class for top-level taxonomies and unlink them through CSS or JS? Otherwise I may just add more taxonomies – so Paramount would have a subtaxonomy of “All Paramount,” 1890s would have a subtaxonomy of “All 1890s”. It would of course be preferable to index from the child terms themselves though.