Size comparison scale

[Infinity Blade]

For Infinity Blade, you are correct about the sizes, but I'm referring to younger, smaller individuals who would be softer targets (and also more fast/agile since they were smaller).

Tyrannosaurus would have had to catch both those and adults close to it in size.

I doubt a 6-7 t Tyrannosaurus would target a healthy 10+ t Edmontosaurus

You don't think a Tyrannosaurus could hunt and take down a 10t Edmontosaurus?

or a 13-14 t Triceratops - at all.

Phew. Good thing there's no real solid evidence those ever existed, then.

(Edit: I am currently thinking of what would be the best thread to move this conversation into)

[Ceratodromeus]

13-14 t Triceratops

So we have 13t Triceratops and 13m carnosaurs but a 13m Tyrannosaurus is "implausible"...lol

I do not consider 13 meters plausible for Scotty because it would result in a far longer and more massive animal than the most rigorous and up to date reconstruction of it I know suggests.

"Far longer"? it is 3 feet, that is nearly barely considerable by most standards.

This sounds ironically familiar.

Edit: in fact

I do not consider 13 meters plausible for Giganotosaurus because it would result in a far longer and more massive animal than the most rigorous and up to date reconstruction of it I know suggests.

huh, look at that.

[Ceratodromeus]

Mar 23, 2020 7:22:15 GMT 5 Infinity Blade said:

Phew. Good thing there's no real solid evidence those ever existed, then.

(Edit: I am currently thinking of what would be the best thread to move this conversation into)

To be honest there has been discussion in most of this thread about animal size, so we might as well keep it here

[dinosauria101]

1: I doubt in a hunting scenario as the risk of injury would be quite high.
2: In a forum style fight, for sure, But a hunting scenario, where the smallest injury could be lethal to the predator, I have my doubts as the Edmontosaurus could land a tail blow, kick, or body slam which would do some rather bad (for the given scenario) damage
3: Depends on whom you ask.

Move this to any thread you see fit.

For Cera, most specimens of Tyrannosaurus could likely function at 13 meters as per some of my scalings. The masses aren't too outlandish.
As for the Giganotosaurus vs Scotty thing, both Scotty and MUCPv-Ch1 are too complete that we know their sizes well enough with less error margins - there is no way the holotype is 13 m. This 13 m is MUCPv-95.

[kekistani]

Mar 23, 2020 9:00:03 GMT 5 dinosauria101 said:

 This 13 m is MUCPv-95.

Which was not 13m based on the evidence we have. (inb4 "it's PAUSSIBEL Im on TEH ROADE of PASSIBILITY YOU CLOSE-MINDED DRIVER ON A ONE WHEY STRET")

[Infinity Blade]

I doubt in a hunting scenario as the risk of injury would be quite high.

What the F*** are you even talking about? Are we talking about the same thing here? I'm talking about actually chasing prey since that was what the discussion of this point ultimately stemmed from.

They could. However, most of Tyrannosaurus' prey items (ceratopsians, ornithomimosaurs, hardrosaurs) were rather cursorial, and I'd imagine an ambushing 10+ tonne theropod would have a lower success rate than a <9 tonne one, since the latter would be able to chase its prey down more efficiently and accelerate more due to it being smaller. Bear in mind the success rate for said <9 tonne theropod would already be quite low.

First of all none of the megafaunal prey of a tyrannosaurid was as cursorial as the tyrannosaurids themselves. If the relatively small cursorial ornithomimosaurs couldn't be caught via ambush, then no adult Tyrannosaurus of any kind would have had any business hunting them.

Chasing after prey is a hunting scenario. The risk of injury from the actual prey item itself is low because it's, you know, running and not fighting. And it remains quite low until/if the prey item stops running and decides to fight back.

In a forum style fight, for sure, But a hunting scenario, where the smallest injury could be lethal to the predator, I have my doubts as the Edmontosaurus could land a tail blow, kick, or body slam which would do some rather bad (for the given scenario) damage

What...? A Tyrannosaurus would have better chances of bringing down a large Edmontosaurus in a hunting scenario than in some AvA forum-style fight. Since, you know...ambush? An AvA forum-style scenario typically consists of both animals being (perhaps uncharacteristically) aggressive with the intent to kill with no element of surprise or any such "unfair" advantages. Needless to say, a hunting Tyrannosaurus would not have abided by those stipulations.

Depends on whom you ask.

A handful of people who have looked into the matter who don't believe that Triceratops reached 14 tonnes as opposed to...just you, who thinks it did?

[Ceratodromeus]

For Cera, most specimens of Tyrannosaurus could likely function at 13 meters as per some of my scalings. The masses aren't too outlandish.

As for the Giganotosaurus vs Scotty thing, both Scotty and MUCPv-Ch1 are too complete that we know their sizes well enough with less error margins - there is no way the holotype is 13 m. This 13 m is MUCPv-95.

The point really just flies over your head, doesn't it?

[creature386]

It's not like 13 m Tyrannosauruses couldn't have resorted to kleptoparasitism if hunting were impossible. I mean, they had plenty of smaller Tyrannosauruses to steal from and the true biggies were few in number.

And yeah, this should be moved. I just don't know where.

EDIT: To elaborate on the kleptoparasitism thing, I acknowledge that it would be a terrible strategy for a species of large theropods, but that doesn't mean it couldn't work for individual large theropods. There would always be Tyrannosauruses who have an exceptionally good sense of smell, who always know where and when their smaller conspecifics hunt or who are just plain lucky. Now, imagine there was a physical law (because frankly, dinosauria hasn't specified exactly what the problem is) that prevented large Tyrannosaurses from hunting. Which ones would it be that beat the 13 m mark? Of course, those aforementioned lucky ones.
I have to admit, I forgot about the paper Infinity Blade posted. I remember the broad strokes about scavenging being impossible for Tyrannosaurus due to there not being enough carcasses. I forgot the part about scavenging becoming harder and harder the larger the theropod (above 1 t) is.

[dinosauria101]

Mar 23, 2020 9:36:06 GMT 5 kekistani said:

Mar 23, 2020 9:00:03 GMT 5 dinosauria101 said:

 This 13 m is MUCPv-95.

Which was not 13m based on the evidence we have. (inb4 "it's PAUSSIBEL Im on TEH ROADE of PASSIBILITY YOU CLOSE-MINDED DRIVER ON A ONE WHEY STRET")

That's using Scott Hartman's 6.5%, but we have no way of knowing if the animal really was that large.
That's not even my point. For, say, the holotype, it's complete enough that we know it's true size for sure.

[dinosauria101]

As for everybody else, I'm a bit too lazy to reply to every other point but I did not think of kleptoparasitism. That's certainly a plausible way to eat, and I could see a few really big tyrannosaurs survive like that

[jdangerousdinosaur]

Giant theropod comparison from the discord

[roninwolf1981]

This might be an odd request for a size comparison:
Black-Thighed Falconet vs Harpy Eagle

Reason why is I'm doing a drawing of humanoid birds of prey (I call them "Harriers" in my story), in which the ruling couple of the Harrier Shogunate are the Emperor and the Shogun. The Emperor is the Black-Thighed Falconet while his wife (the Shogun) is a Harpy Eagle. Yes, she's way bigger than he is.

I wanted to get the size comparisons similar in my drawing.

[Infinity Blade]

Diplodocids in comparison to other animals, by Franoys->.

[Infinity Blade]

I completely understand if everyone's too busy, but I think it would be really cool if someone could make an (accurate!) size comparison between Scott Hartman's most recent Tyrannosaurus and most recent Triceratops.

[roninwolf1981]

In my case, it's because I don't have the equipment to reliably make such size comparisons. I'm still waiting for someone to do a Black-thighed Falconet with a Harpy Eagle comparison.