The order contains three families, 14 genera, and 162 species.

The family contains two genera, each with a single species.

The order contains 5 families, 22 genera, and 190 species.

The order contains 26 families, 269 genera, and 5695 species.

The order is made up of two families which, between them, contain three genera.

The order contains 3 families, 49 genera, and 928 species.

The order contains 2 families, 9 genera, and 114 species.

As of 2008, the family is thought to contain 5 genera and 58 species.

The order contains 8 families, 49 genera, and 851 species.

The order contains 16 families, 199 genera, and 1683 species.