Numbers 26:19-22

The sons of Judah were Er and Onan, but Er and Onan [were judged by God and] died in the land of Canaan. [Gen 38:7-10] The sons of Judah according to their families: of Shelah, the family of the Shelanites; of Perez, the family of the Perezites; of Zerah, the family of the Zerahites. The sons of Perez: of Hezron, the family of the Hezronites; of Hamul, the family of the Hamulites. These are the families (clans) of Judah according to those who were numbered, 76,500.