What is the collective nouns of skeletons?

There isn't a commonly accepted collective noun for skeletons.

Here are some possibilities, depending on the context:

Humorous:

* A rack of bones

* A pile of bones

* A skeleton crew (referring to a small group, often in a humorous context)

Formal:

* A collection of skeletons

* An assortment of skeletons

* A skeletal display

Ultimately, the best choice would depend on the specific situation.