top 10 largest theropods

Great list! My only issue is that T. rex's size average is now closer to 13.5-14 meters. And I do believe that Spinosaurus should replace Oxalaia. But great list!

thanks, and are your rex sizes based off C-Rex and F-Rex?

Also a couple of UCMP specimens. And a skull that hasn't been described yet, that my boss and close friend (a paleontologist) is working on currently. The skull is over 6 ft long!

I forgot to mention Delta's size is a little high, maybe 30-35 ft on average and it was much more lightweight than stated there

Also ignore the post about spino, just saw it lol

for the originally described deltadromeus, yeah it's a bit large. The Theropod they're deeming Bahariasaurus is a larger, seemingly Synonymous animal. Also appears more massive

P.S. Sorry about that, i forgot to include a spino pic with it..

Bahariasaurus was proven to be a different animal based on skull and some basic body shape differences. But it was still large, just not that large. :) And thats ok Lol

You should read my new classic fight!

oh, i'll change that then...i didn't find anything on that :P and will do!

Good list. I agree with it overall. Especially the top 4 ;)

The big 4 are the easiest....really becomes a matter of opinion for 10-5

Yeah, lol

And I would change the average for Rex too, btw

never XD curious..what's your average rex size?

My average size is 45-55 ft in length with 60 ft as its max. This is because of a recent increase in size off of old specimens and many new, larger specimens.

the thing where they add a meter because of vertabrate spacing? which new specimens?

No. Recent sizes put on T. rex specimens that were compared to other theropods. Apparently, the entire body is commonly posed squashed. T. rex would still be just as robust, just longer and larger. As for new specimens:     F. rex 

C. rex

UCMP 118742

UCMP 13785

The undescribed specimen I mentioned, among others...

C. Rex and F. Rex are very fragmentary. UCMP 118742 is an interesting animal indeed, being estimated at 13 meters(45 feet) at 16 years old, suggesting at 15 or 16 meter rexes.

C. rex actually has now been completely described and it actually had a partial skull found with it. Ucmp is 14 meters, but yeah very interesting! How about UCMP 13758? A 15-16 meter rex found with the back of a skull vertebrae and toe. But the 6 ft skull specimen thats undescribed that my boss (paleontologist) is working on is a game changer. :)

first i've heard of the 6 foot skull! i would say definite game changer... are they completely sure its a Rex?

to be blunt, I could tell it was a rex just by looking at it. And then sure enough my boss said it was a T. Rex.  from the crest to the teeth and skull shape, it was pretty obvious it was a rex. So yeah, it was, just hasn't been fully described yet..

Spinosaurus was the largest at 13-15 tons, then giga and carchar at just under 9 tons, and then T-rex at 8 tons.

wow, grat peice of architecture work .

Actually UCMP 118742 was estimated at 13.5 meters with the possibility of reaching 16 meters and about 15 tons (+- 2 tons) if it would've grown as old as Sue.

Good list, I agree with most of it. 

@jezza Spinosaurs were light weight animals. Personally, i see them getting to 9 tons MAX. But that's just personal belief. 

Good job Acro, list looks pretty good.

Thanks! @Primal, That's something to look forward to.

The list was Average weights, now the max. Honestly, i think people high ball theropod weights way to often. 

Agreed. 20 ton spinosaurs? 16 ton Rexes? More like 7-8 ton spinosaurs and 10-11 ton Rexes tops. These guys still had to function....

Great list Acro Rex.... I overall agree with the results.

My maxes for the big 4 are...

1. T-rex= 15-16 meters long and 10-12 tons

2. Giganotosaurus= 14-15 meters long and 8-9 tons

3. Spinosaurus= 16-17 meters long and 7-8 tons

4. Carcharodontosaurus= 12-13 meters long and 6-7 tons