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Carcharodontosaurus saharicus v Tyrannosaurus rex
Topic Started: Jun 8 2012, 05:34 PM (129,995 Views)
Taipan
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Carcharodontosaurus saharicus
This huge meat eater was 45 feet long (5 feet longer than T-rex) and weighed 8 tons, making it one of the largest carnivores that ever walked the earth. This African carnosaur had a gigantic 5’4" long skull and enormous jaws with 8" long serrated teeth. It walked on two legs, had a massive tail, bulky body and short arms ending in three-fingered hands with sharp claws. Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15 metric tons. Its long, muscular legs, and fossilized trackways indicate that it could run about 20 miles per hour, though there is some controversy as to whether it actually did, a forward fall would have been deadly to Carcharodontosaurus, due to the inability of its small arms to brace the animal when it landed. Carcharodontosaurus was a carnivore, with enormous jaws and long, serrated teeth up to eight inches long.

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Tyrannosaurus rex
Tyrannosaurus is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex (rex meaning "king" in Latin), commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the upper Cretaceous Period, 67 to 65.5 million years ago.[1] It was among the last non-avian dinosaurs to exist before the Cretaceous–Paleogene extinction event. Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it was the largest known tyrannosaurid and one of the largest known land predators. By far the largest carnivore in its environment, Tyrannosaurus rex may have been an apex predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger. The debate over Tyrannosaurus as apex predator or scavenger is among the longest running in paleontology. Tyrannosaurus rex was one of the largest land carnivores of all time; the largest complete specimen, FMNH PR2081 ("Sue"), measured 12.8 metres (42 ft) long, and was 4.0 metres (13.1 ft) tall at the hips. Mass estimates have varied widely over the years, from more than 7.2 metric tons (7.9 short tons), to less than 4.5 metric tons (5.0 short tons), with most modern estimates ranging between 5.4 and 6.8 metric tons (6.0 and 7.5 short tons). Packard et al. (2009) tested dinosaur mass estimation procedures on elephants and concluded that dinosaur estimations are flawed and produce over-estimations; thus, the weight of Tyrannosaurus could be much less than usually estimated. Other estimations have concluded that the largest known Tyrannosaurus specimens had a weight exceeding 9 tonnes.

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Blue orca
 
Tyrannosaurs Rex vs Carcharodontosaurus
Edited by Taipan, Apr 24 2015, 10:18 PM.
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MysteryMeat
Herbivore
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T. rex's have higher tibia/femur ratio, relatively larger iliums to femur length. They also have longer and interlocking metatarsals, like ornithomimosaurs. All these features show rex's are more adapted to running. I don't doubt they are faster than large carnosaurs in a short straight line sprint. They need to chase down hadrosaurs, and out-maneuver ceratopsians for food; while large carnosaurs probably dealt with slow-moving sauropods most of the time.
However, in a fight the rex might not be much more agile than similar lengthed carnosaurs. Their huge robust torso would create a lot of rotational inertia, which makes turning quite difficult. And a similar length carnosaur has a deep, but more slender torso.
I would still give the edge to rex, considering it is better adapted as dealing with well-armored, and similar sized preys.
At length parity, rex 60/100
At weight parity, rex 52/100
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theropod
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^Bony, this is a good example of how you can express your opinion without being biased
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Grey
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In a cautious approach, I think this suggestion valuable : both opponents could ultimately die of subsequent wounds. Only, Carcharodontosaurus would be subdued the first, potentially because of the lethal, direct bone-cushing bite of Tyrannosaurus in a region such as the neck or the back of the skull. However, depending of how long the fight have lasted, Tyrannosaurus could succomb afterward due to the massive exsanguination inflicted by the potent, gruesome set of razor-sharp teeth of Carcharodontosaurus.
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SpinoInWonderland
The madness has come back...
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http://palaeos.com/vertebrates/theropoda/carcharodontosaurinae.html#Carcharodontosaurus

According to that site, Carcharodontosaurus was up to 13.5 meters long


Quote:
 
Carcharodontosaurus saharicus Stromer, 1931

Synonyms: Megalosaurus saharicus Deperet and Savornin, 1927, Cacharodontosaurus saharicus (Deperet & Savornin, 1927), Megalosaurus africanus Huene, 1956,

Horizon: Baharije Formation of Egypt, also known from Morocco, Algeria, Tunisia, Libya, and Niger (Early Cenomanian according to Paul 2010)

Phylogeny: Carcharodontosaurinae : Tyrannotitan + (Giganotosaurini + *)

Size: length upto 13.5 meters. weight upto 7 tonnes

Comments: As the name indicates, this animal was originally based on some shark-like teeth. Later, better material has been discovered, including, recently, a very large, nearly complete skull MAK010506 revised 1202266

Carcharodontosaurus shows some unusual convergences with the abelisaurids, another group of Gondwana theropods, specifically regarding certain features in the nature of the skull (Novas 1997b). However other features unite it with Giganotosaurus, while further cranial and postcranial character states are shared in common with Acrocanthosaurus (Holtz 2000), showing without doubt the allosaurian affinities of this species, which has only been confirmed by later cladistic analysis the unquestioned tetanurine It seems therefore that the two lineages had to evolve in similiar ways to similiar unique environmental conditions. (MAK1202266)
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theropod
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According to the same site mapusaurus was 10,2m and 3t, using a wikipedia article as a source, to top it all misunderstanding it. Palaeos can be a great source e.g. about early evolution of vertebrates and marine reptiles, but not on dinosaurs, there are much better ones around.
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7Alx
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Some facts here are outdated. Rio Limay is actually known as Subgroup. I know it was previously described as formation while Huincul, Candeleros were members, which according to recent studies they are considered as formations.
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dinosaur
Heterotrophic Organism
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I will give this one to tyrannosaurus due to size advantage, and awesome weaponary and skills. I wanna sing.
El T.Rex, el T.Rex, es mi corazon. Carcharo, Carcharo, Carcharo no es Bueno. T.Rex es cantante, T.Rex es muy famoso. Carcharo es el loco por el queso del diablo.
And that is my song
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Fragillimus335
Omnivore
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dinosaur
Dec 31 2012, 02:49 PM
I will give this one to tyrannosaurus due to size advantage, and awesome weaponary and skills. I wanna sing.
El T.Rex, el T.Rex, es mi corazon. Carcharo, Carcharo, Carcharo no es Bueno. T.Rex es cantante, T.Rex es muy famoso. Carcharo es el loco por el queso del diablo.
And that is my song
Simply beautiful.....tear*
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Superpredator
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Apex Predator
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dinosaur
Dec 31 2012, 02:49 PM
El T.Rex, el T.Rex, es mi corazon. Carcharo, Carcharo, Carcharo no es Bueno. T.Rex es cantante, T.Rex es muy famoso. Carcharo es el loco por el queso del diablo.
Translated:
The T.Rex, the T.Rex, is my heart. Carcharo, Carcharo, Carcharo not good. T.Rex is singer, T.Rex is very famous. Carcharo is crazy devil cheese.
lol
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dinosaur
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Superpredator
Dec 31 2012, 03:02 PM
dinosaur
Dec 31 2012, 02:49 PM
El T.Rex, el T.Rex, es mi corazon. Carcharo, Carcharo, Carcharo no es Bueno. T.Rex es cantante, T.Rex es muy famoso. Carcharo es el loco por el queso del diablo.
Translated:
The T.Rex, the T.Rex, is my heart. Carcharo, Carcharo, Carcharo not good. T.Rex is singer, T.Rex is very famous. Carcharo is crazy devil cheese.
lol
Correct!! But just a few corrections.
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dinosaur
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Fragillimus335
Dec 31 2012, 02:50 PM
dinosaur
Dec 31 2012, 02:49 PM
I will give this one to tyrannosaurus due to size advantage, and awesome weaponary and skills. I wanna sing.
El T.Rex, el T.Rex, es mi corazon. Carcharo, Carcharo, Carcharo no es Bueno. T.Rex es cantante, T.Rex es muy famoso. Carcharo es el loco por el queso del diablo.
And that is my song
Simply beautiful.....tear*
Hahahahaha! Thank you. I believe u want an encore.
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Black Ice
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That was beautiful! I'm tearing up.....  :'(
Edited by Black Ice, Dec 31 2012, 03:24 PM.
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theropod
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Posted ImagePosted Image
Edited by theropod, Jan 1 2013, 11:25 PM.
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Verdugo
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theropod
Dec 31 2012, 08:43 PM
Posted ImagePosted Image
Isn't Carcharodontosaurus skull supposed to be ~ 140cm ? Where does your 156cm skull come from ?

And why didn't you use this T rex skull instead of that one ?. Its proportions looks much better

T rex skull (Greg Paul 2010):

Posted Image
http://s6.postimage.org/696k80335/T_rex_skull_Greg_Paul.png
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theropod
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Because the portrayed one is sues skull
http://www.cmnh.org/site/Img/AtTheMuseum/Sue/SUEskullRedbkg.jpg
I based it on the best that I could find, unfortunately this seems to be the only lateral view out there

And the 142cm isn´t the maximum skull lenght, it is probably a skull with a downsized premaxilla measured in the saggital plane.

As you can see sue is more than 139cm as well, those simply are not maximum measurements. Read my blog for a more detailed explanation, but in short, the largest dimension of a carcharodontosaur skull is significantly longer than Pmx-Occ, and the largest dimension in a tyrannosaur skull is significantly longer than Pmx-Q(j). Add that to a probably shorter premaxilla in the new figure and it is not surprising the recently reported measurement for Carcharodontosauurs is so far shorter than the portrayed one.

I think it was blaze who gave the 156cm figure, as far as I know he stated 160cm was rounded up.

EDIT: I measured the scale bar and the reconstruction in the description of SGM-DIN 1 and the portrayed size seems to be totally correct.
Edited by theropod, Jan 2 2013, 12:11 AM.
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