Buthoidea

Buthoidea is the largest superfamily of scorpions. Its members are known as fat-tailed scorpions and bark scorpions. A few very large genera (Ananteris, Centruroides, Compsobuthus, or Tityus) are known, but a high number of species-poor or monotypic ones also exist.[1] They occur in the warmer parts of every major landmass on Earth, except on New Zealand.[1] The superfamily was established by Carl Ludwig Koch in 1837.[1]
Taxonomy

Five families are placed into Buthoidea, two extant families Buthidae and Microcharmidae, plus three extinct families.

†Archaeobuthidae (Lebanese amber, Hauterivian)
Buthidae (Modern, Cenomanian - Recent)
Microcharmidae (Modern, Recent)
†Palaeoburmesebuthidae (Burmese amber, Cenomanian)
†Protobuthidae (Grès à Voltzia Formation, Anisian)
†Sucinlourencoidae (Burmese amber, Cenomanian)

References

Rein, Jan Ove (2008): The Scorpion Files - Buthidae. Retrieved June 25, 2008.