Spino arm effectiveness?

wait if spino is shorter, I'm pretty sure it's arms are much less effective! If it's shorter than rex, it's lost its throne completely!

if it is, we have no word really yet. Sereno was saying the find was gonna make spino the largest theropod...but the info presented...i'm not sure. It may just be poor journalism at large and that's why the numbers are the way they are...time will tell. We should get word here within a month

OHHH I thought sereno confirmed it, thanks for the clear up!

Any time! i can see where this would cause confusion.

he confirmed the finds, and they're being studied right now. Pretty sure he approved the exhibit, but he most certainly didn't write that article, which i suspect is faulty the more i read it.

Oh well!

so it went from being 18 meters to 12 meters

Predator x really! Wait, who said? The nat geo or what, but if true spino is gonna be alot lighter! GG

Wait, Spino's been bumped down to 12m? 

what?!?!?! did i say something

Ya you did! :) You just said "so it went from being 18 meters to 12 meters"

SO! thats not bad!

No, No! Thats great! I just wanted to know who said that. Like nat geo or history channel or something! :3

I'm kidding dude but my whole life I thought spino was 18 meters

probably more something like 15 meters.

What this graph shows is i'm guessing is:

12m long Tyranoosaurus Rex

12.4m long Carcharodontosaurus (grew a bit lager)

13-14m long Spinosaurus (sub-adult)

Do you have a source/article for Spino's Arm length? Or that it had a certain degree of reach? Unless this is a new find, this theory didn't make sense.

I guess Giga was shown instead of Carcha. But this just brings up more questions. Giga was certainly not shorter than Rex. Same goes for Carcho and a couple other Theropods.

So, what this discussion is about makes no sense, but a piscivorous biped weighing 11 tons does? 

Wait just a damn minute, you're guessing that Rex to be 12m, and the Spino to be 13-14 m. That makes no sense because Rex is only up to Spino's shoulder, and that would be at least a 3-4 m difference. 

Ya why not

Beats me PX. I wouldn't worry about it if I were you. 

Enough with the "Giganotosaurus was bigger then tyrannosaurus,and so were numerous other theropods" hyping bull. All of those creatures have had size deductions in one way or another, and this comparison shows Giga and rex were almost on parity size wise.

Scott Hartman had this to say on the issue:
"Ok, wading into the always contentious issue of who was the biggest (which on 'teh internetz' seems to loosely translate into "who was more awesome?") I'm presenting my analysis of the always popular Tyrannosaurus vs Giganotosaurus issue.

A few things worth noting:

1) It appears that the type specimen of Giganotosaurus is essentially the same size as Sue despite having a somewhat longer femur. This is sort of surprising, since T. rex is generally thought of as having longer legs (in reality Sue simply has a proportionately longer lower leg relative to her upper leg, not longer legs overall).

2) We really don't know which of the two was longer, as there is enough of a margin of error in restoring tail lengths that the margin of error could allow either one to eek out a "who's the longest" win here (we're ignoring other theropods for the time being). A good discussion on this topic can be found here: [link]

3) Sue almost certainly had a higher mass than the Giganotosaurus type specimen, as tyrannosaurs seem to have broader torsos for their size.

4) So...that large isolated Giganotosaurus jaw? It's not really clear how much bigger that individual is, because there isn't perfect linear scaling between it and the type specimen (the isolated jaw is proportionately a bit deeper). My "best fit" version appears above, and indicates an animal about 6.5% longer than the type. THat would result in an animal over 13 meters in length, and also one that would be heavier than Sue.

5) Yes, I know there are also fragments of even larger T. rex specimens. Unfortunately things like toe bones are even harder to try and scale up reliably, so I haven't attempted it (also I really would want to see the things first hand before I tried it).

6) So in conclusion, between the specimens that are well enough known to estimate reliably, Tyrannosaurus and Giganotosaurus are about the same length, and T. rex was probably a bit heavier. The big jawed Giganotosaurus appears to be from a larger animal, but the nature of fragmentary specimens being what it is you simply aren't going to get to know which species was "truly the biggest". 

Sorry, the data just doesn't allow this sort of thing to be done conclusively at this point in time, no matter how much we wish it were otherwise." Link is down below.

Hartmans takeon Giga vs Rex

cool

@Carnosaur

MUCPv-Ch1 estimates are widely considered around 12.5-13m long and weight around 6.5-13.3 tons

MUCPv-95 has a estimate of 13m-14m. As far as I know, it's Giga's biggest specimen.

@Mr.Happy9097

I think you missed the point. Rex is shown here to be the exact same height is only around 2-3m shorter. It's definitly inaccurate. That I can swear on.