The transition between the great historic periods known as the Formative and Regional Development on the southern coast of the Central Andes is defined by the interaction of two neighboring societies associated with the ceramic traditions Paracas and Topará. In the last 15 years there have been investigation of habitational sites associated with them in the valleys of Chincha, Pisco, Ica and Nasca. However, they are primarily known by the funerary complex of Paracas Caverns, Paracas Necropolis and Ocucaje, excavated archaeologically and clandestinely in the first half of this century. A study of individual interments from three funerary complexes shows a complex relationship of mutual influence between approximately 200 B.C. and 200 A.D. I try to clarify the nature of this exchange between these neighboring societies through the examination of the relationships between the grave, the grave goods and the mortuary concept reflected in the tombs of each complex. I have found evidence of an institution of social, political and religious leadership that could be the missing link for understanding the dynamic multiethnic interaction and the social transformation characterized during this period