Team owner Jerry Jones decided enough was enough following a 45-7 loss to the Green Bay Packers Sunday night. It was the Cowboys’ fifth straight loss, dropping them to 1-7.

“We are grateful to Wade and his contribution to the Cowboys, leading us,’’ Jones said. “We also clearly understand we are not where we want to be at this time, and that’s an understatement. We share the responsibility — all of us.’’

This is the Cowboys’ worst season since 1989 and among the worst in franchise history by record alone. Realistically, it’s the low point considering Dallas was coming off a division title and a playoff win, and was expected to contend for the Super Bowl that’ll be held at Cowboys Stadium.

“An in-season changing is something I was reluctant to consider,’’ Jones said. “I recently addressed the team and my comments with them were very brief and pointed. I told them they should not think this an admission of defeat or finality in this season.

“We have eight games left and we have one goal — to win.’’

The first game under Garrett will be at the New York Giants Sunday.

“He does have the opportunity to get the job long-term,’’ Jones said. “I do believe Jason has the temperament and disposition to affect a culture change.

“I think this is important. We know men’s styles are different. His style, I think is one that can be effective.’’

In addition to Garrett as interim coach, Paul Pasqualoni has been moved to defensive coordinator.

The bottom has fallen out since quarterback Tony Romo broke his left collarbone Oct. 25.

Garrett, 44, becomes the first former Cowboys player to become head coach. He was a backup quarterback behind Troy Aikman from 1993-99. He was the quarterbacks coach in Miami in 2005-06 before rejoining the club in 2007. He has had the title of assistant head coach since 2008, when he withdrew from other interviews to remain with the club.

The 63-year-old Phillips leaves with a 34-22 record over 4 1/2 seasons guiding the Cowboys. He also was 1-2 in the postseason. Dallas won the NFC East twice on his watch.

His career record as a head coach with Dallas, Denver, and Buffalo is 79-57, but only 1-5 in the postseason. He had only one losing record in eight full seasons. Counting a 3-4 mark over two stints as an interim coach, Phillips has 82 regular-season wins, matching the total of his father, former Houston and New Orleans coach Bum Phillips.

Fisher said he isn’t thinking past the end of the season — whenever that is. The contract extension Moss has been seeking most of this year won’t be on the table until then.

“I don’t have a ring,’’ said Fisher. “[And Moss] doesn’t have a ring [so] we’re going to try [to get one together].’’

Moss arrived early yesterday at the Titans facility in Nashville, and Fisher said the receiver passed a physical, worked out, and met with coaches.

In a statement, league officials said Collins “violently and unnecessarily struck a defenseless receiver’’ in the neck and head area with his helmet during Sunday night’s game at Lambeau Field and called it a “flagrant violation of player safety rules.’’

NFL executive vice president of football operations Ray Anderson told Collins that future offenses “will result in an escalation of fines up to and including suspension.’’

The NFL did not hand out any discipline for the hit that gave Colts wide receiver Austin Collie a concussion in Philadelphia Sunday.

Collie was hit by safety Quintin Mikell, then took a shot to the helmet from fellow safety Kurt Coleman’s helmet in the second quarter. Collie briefly lost consciousness and was taken off the field by stretcher.

Coleman was penalized for unnecessary roughness.

The NFL said because the helmet-to-helmet contact was a result of Collie being driven toward Coleman by Mikell’s legal hit, there will be no fine.

Coach Jim Caldwell said Collie returned to Indianapolis on the team flight and was recovering from a concussion.