What is the sixth order of classification system?

The sixth order of classification system in the Linnaean taxonomy is Family.

Here's the breakdown of the Linnaean taxonomy from broadest to most specific:

1. Domain (e.g., Eukarya)

2. Kingdom (e.g., Animalia)

3. Phylum (e.g., Chordata)

4. Class (e.g., Mammalia)

5. Order (e.g., Primates)

6. Family (e.g., Hominidae)

7. Genus (e.g., Homo)

8. Species (e.g., Homo sapiens)

So, families group together genera that share similar characteristics. For example, the family Hominidae includes the genera *Homo*, *Pan*, *Gorilla*, and *Pongo*.