Fossilador in new footage 
Sentai footage of Fossilador breaking open the ground
Here's additionial Sentai footage however they've removed Janru and have added a street sign type of thing or a street sign light into the shot.
All footage of Fossilador as shown on the Monitor is Sentai.
Once you see Gisnt Fossilador in real time again then that is when it goes back to Sentai footage.
Cold be new but can't say for sure, all I can say is it's not from Abaranger 14
However this is new
Sentai 
New
Once you see the Brachiozord is when it goes into Sentai stock footage.
The shot of Brachio and Fossilador in the same shot isn't stock footage although it is Sentai footage however it then cuts to Sentai footage of the Brachiozord opening its compartments in order to release the Tyrannozord and the Tricerazord... BUT once you see Fossilador again then that is when it goes back into regular Sentai footage.
Likely new footage
The following up-close bottom shot of their legs (and their boots) could be new and could be Sentai, couldn't tell you there.
It will then go into the usual Sentai stock footage Megazord sequence except omitting any Pterazord stuff.
New
This shot of Pterazord is Sentai footage however they edited Kira into the scene to make it look like she's riding on her Dinozord.
New footage featuring Triptoids and Black Ranger
Sentai
New
Here's Sentai footage involving Thundersaurus and Fossilador however they edited the Black Ranger into the footage.
New
It then goes back to Sentai footage of the Giant battle.
New
It then goes back to Sentai footage between Fossilador and the Megazord.
New
It then goes to a Sentai shot of the Yellow Ranger in the Megazord cockpit.
New