SANTA CLARA — Wide receiver Jauan Jennings remains in the NFL’s concussion protocol as the team returned to practice on Thursday.
Jennings’ availability remains in question for the 49ers’ game on Christmas night against the Baltimore Ravens.
Jennings was among six 49ers players who were not scheduled to practice due to injuries on Thursday, coach Kyle Shanahan said.
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Defensive tackles Arik Armstead and Javon Hargrave remained out with injuries that have sidelined both starters. Armstead has missed two games with foot and knee issues, while Hargrave sat out Week 15 against the Arizona Cardinals due to a hamstring strain.
Backup running Elijah Mitchell (knee), Linebacker Oren Burks (knee) and tight end Ross Dwelley (ankle) were not scheduled to practice on Thursday.
Defensive end Clelin Ferrell (ankle) was expected to be limited due to an ankle injury.
Right guard Spencer Burford was scheduled to return to full practice after missing time with a knee injury. Jon Feliciano started in Burford’s place against the Cardinals.
San Francisco 49ers
Cornerback Deommodore Lenoir, who was listed as day-to-day this week with bruised ribs, was no longer among the players Shanahan listed with injuries.
Jennings, the team’s No. 3 wide receiver, ranks fifth on the 49ers with 19 catches for 265 yards and one touchdown. He also makes a contribution with his willing and successful blocking ability.
Here are the 49ers and Ravens' official injury reports:
49ers injury report
No practice
DT Arik Armstead (foot, knee)
DE Nick Bosa (not injury related – resting player)
LB Oren Burks (knee)
TE Ross Dwelley (ankle)
DT Javon Hargrave (hamstring)
WR Jauan Jennings (concussion)
RB Elijah Mitchell (knee)
T Trent Williams (not injury related – resting player)
Limited
DE Clelin Ferrell (ankle)
Full
G Spencer Burford (knee)
CB Deommodore Lenoir (rib)
Ravens injury report
No practice
CB Jalyn Armour-Davis (concussion)
WR Odell Beckham (illness)
Limited
WR Zay Flowers (foot)
CB Arthur Maulet (knee)
T Ronnie Stanley (concussion)
S Marcus Williams (groin)
Full
LB Malik Hamm (ankle)