The San Francisco 49ers announced new coach Jim Tomsula’s coaching staff Monday, a 19-man group that includes seven holdovers from former coach Jim Harbaugh’s staff.

The returning coaches: offensive coordinator Geep Chryst (promoted from quarterbacks coach), defensive coordinator Eric Mangini (promoted from tight ends coach), Tom Rathman (running backs), D.J. Boldin (offensive assistant), Ejiro Evero (defensive assistant), Mick Lombardi (defensive assistant) and Ronald Curry (wide receivers).

As previously reported, Tomsula has four former defensive coordinators, including secondary coach Tim Lewis and linebackers coaches Clancy Pendergast and Jason Tarver. Tomsula’s other defensive assistants are line coach Scott Brown and former defensive lineman Aubrayo Franklin.

On offense, Chris Foerster and Eric Wolford will coach the line, Adam Henry the wide receivers, Steve Logan quarterbacks and Tony Sparano tight ends.

Thomas McGaughey Jr. and Richard Hightower will coach special teams.

“Our staff is a collection of passionate coaches who have wide-ranging experience at every level of the game,” Tomsula said in a statement released by the team. “This is a group of talented communicators who take great pride in helping players maximize their abilities. Throughout the staff you see bright, high-energy coaches who enjoy taking a hands-on approach to teaching the game. We are all looking forward to getting to work.”