Cretaceous Carnage #2

2105 Views13 Replies

Forum Topic

Carnosaur

MemberCompsognathusAug-22-2014 9:01 AM

Mapusaurus Roseae

Mapusaurus is similar in size to its close relative Giganotosaurus, with some individuals estimated as over 10.2 metres (33 ft) in length and weighing approximately 3 metric tons (3.3 short tons). The longest individual for which Coria and Currie (2006) provided an estimate is the animal to which femur MCF-PVPH-208.203 belonged; this individual is estimated as 10.2 metres (33 ft) long. Coria and Currie note the presence of isolated bones from at least one longer individual, but do not provide a figure, instead finding the larger bones comparable in size to those from a Giganotosaurus estimated at 12.2 metres (40 ft) in length. Maximum length is thus unknown but greater than 12.2 metres (40 ft). The weight estimate is from another femur (MCF-PVPH-208.234). It was furthermore concluded that the largest remain, a pubic shaft, was 110% the size of the giganotosaurus holotype.

Tyrannotitan Chubutensis

Tyrannotitan is a genus of Carcharodontosaurid from the earlyCretaceous period, discovered in Argentina. It is closely related to other giant predators like Giganotosaurus and Carcharodontosaurus; Its fearsome appearance is reflected in the meaning of its name, "Tyrant titan". Little information has yet been offered about Tyrannotitan. Only a very brief description of the fossils has been published (four pages). The teeth are less blade-like than those of its kin, and possess odd, lumpy denticles (there is a barely distinguishable groove in the center, dividing each denticle into two parts). Unlike known carcharodontosaurids, this animal lacks pneumatically extending into the sacral and caudal centra. The Scapuloid fused, and much better developed than that of Gigantosaorus carolinii, yet the arms are very small.

Nature doesn't deceive us; it is we who deceive ourselves.

13 Replies

Hiphopananomus

MemberCompsognathusAug-22-2014 9:10 AM

I'd, say Tyrannottian 65-35 as based on MY estimates it was larger, stronger and more powerfully bulit then Mapusaurus.

"Somewhere on this island is the greatest predator that ever lived. Second greatest predator must take him down."Roland Tembo"

"Jurassic park: The Lost World"

Allotitan

MemberCompsognathusAug-22-2014 9:13 AM

Ok this is a hard one.

i don't know who has a better bite force so I can't judge on that. I honestly think that its A 50-50 chance. Tyrannotitan is more robust and might be the stronger one, but the Mapusaurus will have its useful arms which can do a lot of damage. Being these two are very, very similar, I'll stand 50-50

When life gives you lemons, don't make lemonade. Tell life I don't want you're damn lemons, and then squeeze them into life's eyes!

lxlplictz

MemberCompsognathusAug-22-2014 9:19 AM

I'd say tyranotitan 60/40, because it seems more robust and stronger but who knows with so little fossils!

Carnosaur

MemberCompsognathusAug-22-2014 9:33 AM

Both have a slicing dentition, so bite force persay wouldn't play much of a role in this one at all, if any

Mapusaurus, based on what i've found on it recently, exceeded the length of Giganotosaurus, but was surpassed by it in weight by 1/2 tons.

But saying it was the largest carcharodontosaur because of this would be like saying it was the largest theropod.

The 1.3m femur of Mapusaurus probably belonged to an 11.3-11.8 metre specimen, while the biggest one is probably 13.6m. The femur of the Giganotosaurus holotype is similarly long, albeit apparently more slender than that of Tyrannotitan (the latter factor not really relevant), but is not from the largest specimen.

I think the paratype of T. chubutensis was roughly comparable to the Giganotosaurus holotype, perhaps slightly larger (in 12.4-13m territory). Unless it was considerably more robust in built, its probably not quite as heavy as sue, albeit longer. We really don't that much on this thing though, so there's no way to really tell(other then the fact its femur is more robus then that of the holotype giga, which may be species variation)

Equally sized animals, in the same family, in the same place, seperated by a couple million years or so...this is a close one..i'll say 50/50 until i find something that changes my mind

@HHP - Tyrannotitan, mapusaurus, and giganotosaurus are all in the subfamily Giganotosaurini, a small group of fairly robust carcharodontosaurs that ontain the most advanced South American species, which they found to be more closely related to each other than to the African and European forms. Coria and Currie did not formally refer Tyrannotitan to this subfamily, but when a more detailed description of that genus was initiated, they discovered that it is very likely a basal Giganotosaurine.

Allosaurus

Carcharodontosauridae

Carcharodontosaurinae

Carcharodontosaurus

Giganotosaurini

Tyrannotitan

	Mapusaurus

	Giganotosaurus

Nature doesn't deceive us; it is we who deceive ourselves.

Sci-Fi King25

MemberAllosaurusAug-22-2014 11:09 AM

I'd say Tryannotitan, 55-45.

“Banana oil.”- George Takei, Gigantis: The Fire Monster

Hiphopananomus

MemberCompsognathusAug-22-2014 11:20 AM

I know carnosaur but, Tyrannotitian is still more robust and based off my estimates it is overal larger.

"Somewhere on this island is the greatest predator that ever lived. Second greatest predator must take him down."Roland Tembo"

"Jurassic park: The Lost World"

Carnosaur

MemberCompsognathusAug-22-2014 4:18 PM

Oh yeah, the femur compared side to side with that of mapusaurus completely overshadows it in width. Other fossils from Tyrannotitan do this as well, but i'm not entirely sure this is a size characteristic or a species one..But overall, Tyrannotitan does appear to be more robustly built, while Mapusaurus is the pinnacle of evolution for the Carcharodontosaurs(at the moment any way)

Nature doesn't deceive us; it is we who deceive ourselves.