Fluttershy when she was a “mama t-rex” in her past life, until she got sick of being a carnivore, so she became herbivore as today.

@Scrounge  
True and would be in the same size range to fit in with the others.

@Daneasaur  
Pteranodon may not have been around, but Quetzalcoatlus fits the time and place.

@Starlight Storm  
It is somewhat fitting, really. It’s shown that past her meek personality, there is an outright ball of wrath that she keeps under careful wraps because being kind to others is her love in life. That, and young Rexes had super long, lanky legs, just like fluttershy.
 
 
@Scrabbleman  
The question is what RD happened to be, since she’d have to be swift and brightly colored. Probably a troodon or other feathered dromeosaur.
 
Interestingly, Pteranodon weren’t around at the same time as T-rex; they lived 88 million years ago, 33 million years before Rex existed, so that wouldn’t be an apt flyer for them.

😓

For Equestria’s sake, what ever you do, don’t step on a butterfly!

@mrdoctorderpy  
Oh, just sharing some equine facts there.

@Metal Brony 87  
i was joking because of the cutie mark

@mrdoctorderpy  
No. Horses evolve from prehistoric mammals called Mesohippus that lived from thirty to forty million years ago. Here’s an image of four of them galloping through a field.  
http://upload.wikimedia.org/wikipedia/commons/8/84/Mesohippus.jpg

did pony evolve from dinosaurs?

@Background Pony #F365  
Interesting.

@Background Pony #DFD1
 
@PonyPon
 
Lepidopterans (the butterfly and moth group) are known from since the Jurassic. Fossil lepidopterans were not, as a whole, significantly larger than their close modern relatives.

@Dino-Mario  
Or… well, I got nothing.

@Dino-Mario  
Queen of the dinoponies…or ponysaurs

Behold, the mighty Fluttersaurus rex

@Background Pony #DFD1  
In some form.
 
They were probably much bigger, though.

Were butterflies around even the prehistoric times?

Fluttersaur loves all the little animals.
 
They’re so TASTY.

That T rex looks like it has the same destiny as Fluttershy some million years ago.

@Sr Pelusa 41 seconds later: “Oh Star Swirl the Bearded, look at yo-cough cough hack”  
“Bleh, I got beard in my teeth!”

@Niggoslav_Krawczyk  

I demand a comic of this world!

@SaburoDaimando I was actually thinking of Star Swirl and Celestia being the meme, with random horrible monsters (like Ron Paul and Gordon Ramsay) taking the place of the rex.  
Or Anthony Bourdain with a blue feather in his mouth.

Hey, do y’all remember the rumor of Fluttershy becoming a dragon in S4?

Whelp. Looks like the comics snuck in a new meme just to steal the spotlight from the show: Fluttersaurus Rex.