looking for indigenous records from Mexico

Can anyone tell me where I can find records of indigenous family members in Mexico. I know there are some listed in the regular archives such as the LDS family history library but is there any other form of registering births, deaths etc of indigenous people of Mexico?
Thank you  Rossana 
“It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.” Darwin