Within the Choctaws were two distinct Moieties: Imoklashas (elders) and Inhulalatas (youth). Each moiety had several clans or Iskas, it is estimated there were about 12 Iskas altogether. Identity was established first by Moiety and Iska, so a Choctaw identified himself first as Imoklasha or Inhulata and second as Choctaw. Children belonged to the Iska of their mother meaning they are matrilineal. The following were some major districts:1

Okla Hannalli (people of six towns)
Okla Tannap (people from the other side)
Okla Fayala (people who are widely dispersed)

John Swanton writes "there are only the faintest traces of groups with truly totemic designations, the animal and plant names which occur seeming not to have had a totemic connotation."2

Swanton also adds 'Adam Hodgson ... who "spoke English very well," told ... "that there were tribes or families among the Indians, somewhat similar to the Scottish clans; such as, the Panther family, the Bird family, Raccoon Family, the Wolf family."'2

The following are possible totemic clan designations:2

Wind
Bear
Deer
Wolf
Panther
Holly Leaf
Bird
Raccoon
Crawfish

1^ Mieirs, Jennifer. "Choctaw Clans, and the People". Jennifer's Genealogical Realm It's All About Family. http://jenniferhsrn2.homestead.com/clan.html. Retrieved 2010-08-16.
2^ a b c Swanton, John (2001, Published Earlier). "Clans and Local Groups". Source material for the social and ceremonial life of the Choctaw Indians. University of Alabama Press. p. 79. ISBN 0-8173-1109-2

(The above copied from Wikipedia, the free encyclopedia)