Purussaurus brasiliensis vs. Tyrannosaurus rex

[creature386]

Unfortunately, I'm tired, but you're having an engaging discussion right now, so I just wanted to drop this on Purussaurus' size here for now:
journals.plos.org/plosone/article/comment?id=10.1371/annotation/017d2139-4395-40b2-95dc-aad651c0d625

[dinosauria101]

This one: (this is the low end of size estimates however)

EDIT: Ninja'd by creature386

[Verdugo]

^ That is an old chart from Randomdinos, he has updated a new one

Also, Skull Length and Mandible Length are two completely different things, especially in case of Crocodilians since their Mandible length is usually a good deal greater than their Skull length. 

[dinosauria101]

Aug 10, 2019 8:34:21 GMT 5 Verdugo said:

1: That is an old chart from Randomdinos, he has updated a new one

2: Skull Length and Mandible Length are two completely different things, especially in case of Crocodilians since their Mandible length is usually a good deal greater than their Skull length. 

1: I'm not aware of any such new chart. Are you able to post it?

2: Oh, so if the mandible is 175 cm, the skull is about 200 cm?

By the way Verdugo, who do you think would win?

[dinosauria101]

HERE is a better chart:

[jdangerousdinosaur]

Up to date comparison by Randomdinos

[dinosauria101]

Thanks for posting that!
A 6.2 ton Purussaurus would need at least 2 meters of water to win; on land, it's probably only got about 25 percent odds

[jdangerousdinosaur]

I swear there was a comparison between Tyrannosaurus and Purussaurus on the size comparison page that used Franoys Sue and the diagrams here for scale but I can't seem to locate it.

[dinosauria101]

Post when you find it; there's no hurry.

[jdangerousdinosaur]

I found this on Google images pretty sure it's using the Purussaurus from random dinos

[all]

If Purussaurus  was indeed 12.5 meters and weigh over 8 metric tons. Then I''ll go with 50/50
Depending on the depth of the water. 

One thing to consider is the fact that since the fight would be in the water.  Purussaurus would have more of a chance to surprise Tyrannosaurus than vice-versa. 

I don't know much about this particular crocodile. But bite force being over 15500 lbs of force is slightly more than tyrannosaurus' 12800 lbs of force. Of course on the tip of the blade T-rex has a good chance to make up that difference.

PB is slightly better protected than T-rex . T-rex on the other hand has slight weight advantage so like I said In my opinion 50/50

[dinosauria101]

all

Purussaurus is actually about 5-6 tons

[all]

  If Purussaurus was indeed up to 6 tons that changes the dynamic of the fight quite a bit. there seems to be a great deal of disparity between maximum weight as well. With some estimates putting him as low as 9.3 short tons. Which would translate to slightly above 8.3 metric tons. While others put it above 15 short tons. So what are the actual sizes. In most books from late 1980's  and early 1990's most books would put length of Deinosuchus at 15 meters. On the other hand now his length is said to be around 10.5 meters. In 18th century a very large rosary crocodile could reach close to those proportions.

I'm sorry I don't know how to scale animals based only on small pieces or few bones and yes I should. And I'm new to this site so i'm not familiar with everything that goes on here.  I have not read much about animals since i was a kid. And at that time good scaling techniques were available only to professional paleontologist's and zoologists. And it seems they made lot of mistakes as well. And if you look at the book from that era and now there is a world of difference. And it is likely that we are making a lot of mistakes if someone will look at us 20 years from now. 

So there seems to be a lot of unknowns at least the way I see it. If you take that PB was about 6 tons. I will go with 6 metric tons despite that it is said that its 6 short tons because I believe largest examples of PB were probably that size. And 8 metric tons with tyrannosaurus. The TR usually wins. However in very deep water PB has a good chance to win. It still has higher bite force and better armor. But size of the teeth and superior weight of TR usually win the day.   

[all]

When I said that 9.6 short tons and over 15 short tons  weight measurement I meant about Tyrannosaurus rex.  I forgot to put word tyrannosaurus at that place. When I said comparison between measurement of 10.5 and 15 meters I was talking about Deinosuchus. Sorry I probably made myself unclear. 

[elosha11]

all, the below quote of 10.5 meter crocs is almost certainly a gross exaggeration, which was much more common in the 18th and 19th centuries. Great whites were also reported at similar sizes a hundred years ago, but photographic evidence shows such estimates to be way off.

In 18th century a very large rosary crocodile could reach close to those proportions.

Also what is a rosary croc, I've never heard a species described as such?