Here's Sentai footage that could be recycled but it was also shown in Abaranger 20.
HOWEVER I can tell you these shots do definitely originate from Abaranger 20 and actually start the regular footage from there  
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These shots of the Brachio Morpher   are something that I'm unsure about at the moment.
It then cuts to Sentai stock footage of the Brachiozord and then it cuts to Sentai stock footage of the Stegozord.
Sentai... regular Sentai footage
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Sentai
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Sentai
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Sentai
I believe this is new  
Sentai
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Sentai
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I believe this shot is a recycled Sentai shot.
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I believe this is new but not certain
This air shot is probably Sentai
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Sentai
New, I believe but not certain
Sentai
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Sentai
This is new footage since the Sentai footage here had to be reshot since Red got punched in the face
Back to Sentai
Not sure at the moment but probably new
Tommy's Computer beeps and his Monitor shows Sentai footage of the returned Angor from Abaranger 20.
The footage of Red Ranger talking into his Morpher as shown on the Monitor is new.
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Sentai
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Sentai 
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Sentai
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Sentai
New footage of White with Conner's Laser
Also new
Once you see the Cephalozord then that is when it goes back to Sentai footage.
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Sentai
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Sentai
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The transformation to Super Dino Mode is Sentai stock footage.
Regular Sentai footage
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Sentai
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Sentai
Sentai
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Sentai
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Sentai
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Zeltrax and Mesogog 
Once you see the Dragozord is when it goes into Sentai stock footage.
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Back to Sentai
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Sentai
The combination of the Dragozord and Stegozord to form the Dino Stegozord is Sentai stock footage.
Mesogog is watching Sentai footage of Angor's battle with the other Diozords
This shot is Sentai footage however the Blue and Red Rangers were edited into the footage.
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Once it cuts to Giant Angor's feet then that is when it goes back to Sentai footage.
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It then cuts back to Sentai footage of the Dino Stegozord continuing with its Laaer attack.
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Tommy returns to the Warehouse to get the Fossil Finder equipment back however he returns into the evil White Ranger and those scenes featuring the White Ranger are all new.

NOTE: All Sentai footage comes from Abaranger 20.