The team, which is made up of players from Division II and III, along with NAIA, was released Thursday.
Bell is the all-division rushing leader in the NCAA, averaging 189.5 yards per game. He also led the nation in scoring at 17 points per game for Wayne State, located in Detroit.
Amedro threw 49 touchdown passes, the most in college football this season, and passed for 4,945 yards for the top scoring team in Division II.
Completing the Little All-America backfield is Isaac Odum of Minnesota-Duluth, a junior who ran for 1,808 yards and scored 33 touchdowns.
Mount Union's Cecil Shorts made the first team at receiver, just a few days after he filled in at quarterback in the Purple Raiders' 24-7 semifinal victory against Wesley.
Shorts caught a touchdown pass, then ran for two scores while playing quarterback for injured starter Kurt Rocco.
"To me, he's the best player in Division III football," Wesley coach Mike Drass said after the game. "I don't think you look at it any other way. That's how good I think that kid is."
The Purple Raiders will play Wisconsin-Whitewater on Saturday in Salem, Va., for the national championship.
Frantz Simeon of Arkansas Tech is the other All-American receiver.
The offensive line is led by Brett Grozinger of Division II champion Northwest Missouri State and Augustana (Ill.) College's Blaine Westemeyer, who become the first offensive lineman to win the Gagliardi Trophy as Division III's top player.
Frederick Bruno from Wayne (Neb.) State is the all-purpose player, and Steve Ivanisevic of Washburn is the kicker. Justin Hinson of UNC Pembroke is the punter.
West Liberty put three players on the first-team, the most of any school. Joining Amedro is tight end Ryan Travis and defensive back Derek Evans.
Two North Alabama players made the first-team defense: linebacker Michael Johnson and defensive lineman Montrell Craft. John Jacobs, D-II's leading tackler from Saginaw Valley State, also made the team.