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Brazilian lithic industries that present bifacial points in their assemblages have been associated to a cultural unity named Umbu Tradition. However, technological studies are still scarce, and it makes difficult to test this cultural unity validity using this approach. This article presents the technological study of Santa Cruz site, located at Monte Mor, São Paulo State, Brazil. We aim to provide a complete description for this industry at stablishing a technological pattern, and provide one more data source for Umbu tradition associated sites. RESUMO: Apesar de as indústrias líticas com presença de pontas bifaciais no sudeste e sul do Brasil serem geralmente associadas à unidade cultural denominada Tradição Umbu, ainda são escassos os estudos tecnológicos destas indústrias, de modo que se torna difícil testar a validade desta unidade cultural a partir desta abordagem. Este artigo apresenta o estudo tecnológico da indústria do sítio Santa Cruz, localizado no município de Monte Mor, estado de São Paulo, e tem como objetivo fornecer uma completa descrição da indústria estabelecendo um padrão tecnológico, e fornecer mais uma fonte de dados para sítios associados à Tradição Umbu.ABSTRACT: Brazilian lithic industries that present bifacial points in their assemblages have been associated to a cultural unity named Umbu Tradition. However, technological studies are still scarce, and it makes difficult to test this cultural unity validity using this approach. This article presents the technological study of Santa Cruz site, located at Monte Mor, São Paulo State, Brazil. We aim to provide a complete description for this industry at stablishing a technological pattern, and provide one more data source for Umbu tradition associated sites.