Center Ed Flanagan, a four-time Pro Bowl selection, has died, the Detroit Lions announced Wednesday. He was 79.A cause of death was not released by the team.Flanagan is a member of the Lions’ all-time team. He played 10 seasons with Detroit from 1965-74, and started all 139 regular-season games he played with the club.Flanagan made his first Pro Bowl in 1969, the start of four selections in five seasons.