Promoted Palace were the busiest top-flight club during the transfer window as Ian Holloway brought in 16 new signings to bolster his squad.
However, two of those will not feature until January at the earliest after Holloway was unable to accommodate Dobbie and Marange in his 25-man squad.
Dobbie impressed on loan at Palace in the closing months of last season and started the opening day defeat at home by Tottenham Hotspur.
Marange arrived at Palace from Bordeaux and his sole appearance to date came in last week's surprise Capital One Cup defeat at League One side Bristol City.
Also omitted from the squad is forward Aaron Wilbraham, who started against Spurs and featured as a late substitute in last Saturday's 3-1 win over Sunderland.
And there was also no room for midfielder Owen Garvan after he had appeared in Palace's opening three games in all competitions before being left out of the Sunderland victory.
Elsewhere, there were no surprise omissions from the remaining 19 Premier League as all the major summer signings were included.
Each squad must contain no more than 17 players who do not fulfil the Home Grown Player criteria.
This criteria defines a player who, irrespective of his nationality or age, has been registered with any club affiliated to the Football Association or the Football Association of Wales for a period, continuous or not, of three entire seasons or 36 months prior to his 21st birthday (or the end of the season during which he turns 21).
Clubs will be allowed to make changes to the squad list during the January transfer window.