Dalton suffered a fractured thumb in his right (throwing) hand during Sunday's loss to the Steelers, ESPN.com reports.
Per the report, coach Marvin Lewis indicated that Dalton will miss next weekend's game against the 49ers, but it's unclear if the QB will miss any additional time beyond that. While Dalton, who is slated to see a specialist Monday, is sidelined, AJ McCarron is on track to fill in at QB for the Bengals.