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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,221 Views)
Wolf Eagle
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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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Spinosaurus aegyptiacus
Spinosaurus is a genus of theropod dinosaur which lived in what is now North Africa, from the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago. Spinosaurus may be the largest of all known carnivorous dinosaurs, even larger than Tyrannosaurus and Giganotosaurus. Estimates published in 2005 and 2007 suggest that it was 12.6 to 18 metres (41 to 59 ft) in length and 7 to 20.9 tonnes (7.7 to 23.0 short tons) in weight. The skull of Spinosaurus was long and narrow like that of a modern crocodilian. Spinosaurus is thought to have eaten fish; evidence suggests that it lived both on land and in water like a modern crocodilian. The distinctive spines of Spinosaurus, which were long extensions of the vertebrae, grew to at least 1.65 meters (5.4 ft) long and were likely to have had skin connecting them, forming a sail-like structure, although some authors have suggested that the spines were covered in fat and formed a hump. Multiple functions have been put forward for this structure, including thermoregulation and display. Dal Sasso et al. (2005) assumed that Spinosaurus and Suchomimus had the same body proportions in relation to their skull lengths, and thereby calculated that Spinosaurus was 16 to 18 meters (52 to 59 ft) in length and 7 to 9 tonnes (7.7 to 9.9 short tons) in weight. The Dal Sasso et al. estimates were criticized because the skull length estimate was uncertain, and (assuming that body mass increases as the cube of body length) scaling Suchomimus which was 11 meters (36 ft) long and 3.8 tonnes (4.2 short tons) in mass to the range of estimated lengths of Spinosaurus would produce an estimated body mass of 11.7 to 16.7 tonnes (12.9 to 18.4 short tons).

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Edited by Taipan, Apr 24 2015, 10:10 PM.
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MightyMaus
Apr 11 2013, 08:56 AM
Fish that could be the size of rhinos....Also, remember that Spinosaurus was only partially piscivorous.
A trike is bigger than a rhino and more formidable than a fish
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MightyMaus
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Nate
Apr 11 2013, 10:48 AM
MightyMaus
Apr 11 2013, 08:56 AM
Fish that could be the size of rhinos....Also, remember that Spinosaurus was only partially piscivorous.
A trike is bigger than a rhino and more formidable than a fish
An astute observation. Do you realize you are promoting the notion that physical ability is controlled only by prey selection... This is the same as saying a weasel would school a otter, because weasels take large terrestrial prey, and otters generally take small aquatic prey.
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MightyMaus
Apr 11 2013, 11:16 AM
Nate
Apr 11 2013, 10:48 AM
MightyMaus
Apr 11 2013, 08:56 AM
Fish that could be the size of rhinos....Also, remember that Spinosaurus was only partially piscivorous.
A trike is bigger than a rhino and more formidable than a fish
An astute observation. Do you realize you are promoting the notion that physical ability is controlled only by prey selection... This is the same as saying a weasel would school a otter, because weasels take large terrestrial prey, and otters generally take small aquatic prey.
A weasel and a otter is a bad comparison btw.

Spinosaurus never faced big dinosaurs so it would have little experience facing off large dinosaurs. T rex fought other tyrannosaurs trikes and ankylosaurus'.
Yes I do realize btw because I think experience I.M.O is a fator

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Black Ice
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Drom King
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Dinosaur is unbanned guys :P
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SpinoInWonderland
The madness has come back...
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Nate
Apr 11 2013, 01:03 PM
Spinosaurus never faced big dinosaurs so it would have little experience facing off large dinosaurs.
What idiotic statement is that. Carcharodontosaurus, Bahariasaurus, and Sauroniops would disagree with you.
Edited by SpinoInWonderland, Apr 11 2013, 03:56 PM.
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Monitor X
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MantisShrimp
Apr 11 2013, 09:44 AM
Monitor X
Apr 6 2013, 10:39 AM
MantisShrimp
Apr 5 2013, 09:33 PM
LOL@ broly.
Your notion on Torvosaurus is not supported by any evidence. Again your bigotry towards certain opinions and animals is astonishing. I think you showed signs of betterment but I guess I was wrong.
Please, can you say me if it is wortwhile to discuss with this guy ? I have never seen such a bad faith among dinos forumers...

Me or him?
I try to keep my arguments as scientific as possible, which is nearly impossible with certain users.
If my attitude comes over a little nasty, I am just tired of fanatical quasi-religious worship and denigration of animals.
I was talking about the broly guy, I understand you fairly well. That was sarcasm toward him.
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Vivyx
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dinosaur
Jan 14 2013, 06:55 AM
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T.Rex nearly broke spinos neck.
Lol, you are using Dinosaur King as a source.



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DarkGricer
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Nate
Apr 11 2013, 01:03 PM
Spinosaurus never faced big dinosaurs so it would have little experience facing off large dinosaurs
What.

Carcarodontosaurus, Sauroniops, Paralatitan, Aegyptosaurus, and Spinosaurus itself all lived together. Chances are they fought each other every now and then.
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SpinoInWonderland
The madness has come back...
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Dog
Apr 11 2013, 08:54 PM
dinosaur
Jan 14 2013, 06:55 AM
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T.Rex nearly broke spinos neck.
Lol, you are using Dinosaur King as a source.



LOL, I guess that Saurophaganax can decimate entire groups of dinosaurs, even large sauropods, with giant fireballs now, using that very same "source"....
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Monitor X
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DarkGricer
Apr 11 2013, 09:48 PM
Nate
Apr 11 2013, 01:03 PM
Spinosaurus never faced big dinosaurs so it would have little experience facing off large dinosaurs
What.

Carcarodontosaurus, Sauroniops, Paralatitan, Aegyptosaurus, and Spinosaurus itself all lived together. Chances are they fought each other every now and then.
But have we evidences that Spinosaurus actually fought these animals ? No. Except a tooth from a carcharodontsaur found embedded in a backbone...
Its semi-aquatic lifestyle is the reason why it could live in such an environment, it did not have to compete for dominance as it filled an unique ecological position and could switch with land and swamps.
It may have sometimes engaged conflicts but we have no evidence. On the other hand for Tyrex we have numerous evidences of its agression with others species and its conspecifics.
All what you argue guys are rampant, boring speculations, ignoring the same for Tyrex.
Edited by Monitor X, Apr 11 2013, 11:12 PM.
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Spinodontosaurus
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Whilst true, I don't think that is what he was meaning, as it was merely a response to a claim that Spinosaurus never faced large dinosaurs, which can be interpreted as having never met large dinosaurs, which is completely false.

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And... why do some users insist on continually responding to several week old troll comments from a now banned user? What is the point? Do you have an urge to post something just for the sake of it? Or to raise your post count?
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coherentsheaf
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MightyMaus
Apr 11 2013, 11:16 AM
Nate
Apr 11 2013, 10:48 AM
MightyMaus
Apr 11 2013, 08:56 AM
Fish that could be the size of rhinos....Also, remember that Spinosaurus was only partially piscivorous.
A trike is bigger than a rhino and more formidable than a fish
An astute observation. Do you realize you are promoting the notion that physical ability is controlled only by prey selection... This is the same as saying a weasel would school a otter, because weasels take large terrestrial prey, and otters generally take small aquatic prey.
Not a good comparison... Otter prey size can on occasion be considerable.
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Jinfengopteryx
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This therad is so boring.
It's basically bringing old arguments against the trolls.
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Monitor X
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The problem with that thread subject is that too many people are only relying, even without realize it, on their lone wishful thinking. There are few guys displaying a true objectivity. You and spinodontosaurus are among them.
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brolyeuphyfusion
Apr 11 2013, 03:55 PM
Nate
Apr 11 2013, 01:03 PM
Spinosaurus never faced big dinosaurs so it would have little experience facing off large dinosaurs.
What idiotic statement is that. Carcharodontosaurus, Bahariasaurus, and Sauroniops would disagree with you.
I.M.O none of those are as formidable as an opponent to spinosaurus than t rex were to each other I would not have enough time to post here anymore ok maybe a couple times a week because of very crazy reasons.
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