| Welcome to Carnivora. We hope you enjoy your visit. You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile and voting in polls. Registration is simple, fast, and completely free. Join our community! If you're already a member please log in to your account to access all of our features: |
| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
|---|---|
| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,319 Views) | |
| Wolf Eagle | Jan 7 2012, 02:16 AM Post #1 |
![]()
M E G A P H Y S E T E R
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
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. ![]() 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).
Edited by Taipan, Apr 24 2015, 10:10 PM.
|
![]() |
|
| Replies: | |
|---|---|
| Verdugo | Nov 10 2012, 02:56 AM Post #931 |
![]()
Large Carnivores Enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Other ??. Only Dal Sasso. And the 18m Spino is not from similar proportion to other Spinosauridae, if you don't trust me, then you should do some math for yourself Suchomimus skull is 1,19m body length is 11m Spinosaurus skull is 1,75m body legnth is 16m |
![]() |
|
| theropod | Nov 10 2012, 03:07 AM Post #932 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
dal sasso, mickey mortimer and thomas holtz to be exact and Dal Sasso again, appearantly confirming its old estimates at the moment. don´t make it look as if Caus figure was the only valid one, thats all. All I´m suggesting is a 16+m spinosaurus |
![]() |
|
| Fragillimus335 | Nov 10 2012, 03:42 AM Post #933 |
|
Omnivore
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
And also, even if MSMN V4047 was only 14.5-16 meters, I'm sure other Spinosaurus hit the 18 meter mark from time to time. Just like the average T-rex is 11.5 meters, and some fragments indicate something 15% bigger. |
![]() |
|
| theropod | Nov 10 2012, 03:45 AM Post #934 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
not a valid argument imo as it is mere speculation, even tough likely, but that´s why i think we should not be particularly conservative about spinosaurus in thei case and even less take dal Sassos figures as "debunked" and only trust in the lowest figures you can find. |
![]() |
|
| Fragillimus335 | Nov 10 2012, 04:03 AM Post #935 |
|
Omnivore
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Everything we talk about on this forum is speculation. It is common sense that this one individual is not the largest Spinosaurus ever to exist. I'm a big guy, 6'1, but they are thousands of humans 20% larger than me walking around. |
![]() |
|
| theropod | Nov 10 2012, 04:07 AM Post #936 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Nevertheless taking hypothetical max figures basing on such a metodology led us to things like 20m T. rex, 25m Liopleurodon and 30m Carcharocles Megalodon |
![]() |
|
| Fragillimus335 | Nov 10 2012, 04:37 AM Post #937 |
|
Omnivore
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Not really, I'm just stating that some large individuals were 1-2 meters longer than the specimen we have. |
![]() |
|
| theropod | Nov 10 2012, 04:41 AM Post #938 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
imo that´s not valid either, but it is a different story as it is possible this specimen itself reached those sizes, it is just a bit more liberal |
![]() |
|
| Fragillimus335 | Nov 10 2012, 06:14 AM Post #939 |
|
Omnivore
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
You not makin any sense man. Dis be one dino... de chance dat it be the biggest... it so small i can't believe! Seriously, it's like finding one 1.5 ton rhino carcass, and then saying there was no way rhinos got bigger than the one you found. |
![]() |
|
| genao87 | Nov 10 2012, 06:42 AM Post #940 |
|
Heterotrophic Organism
![]() ![]() ![]() ![]() ![]()
|
therepod, so you believe that Spino was around 14-15 tons, in between the lowest to the highest estimate. Reading everything about Cau, Dal Sasso, Mickey, etc. showed they know their stuff, all made very convincing arguments and had data backing it up. i believe as well that Spino on average was around 14-15 tons. Eating a fish diet will make monsters out of some animals, assuming they have the genetics. Seems humans are meant to eat sea food more than any other food for optimal health. |
![]() |
|
| theropod | Nov 10 2012, 06:46 AM Post #941 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
@fragillimus: That is absolutely true, but you can not just speculate on a maximum size, that´d be unscientific. you can say you are less conservative about this animals sizhe estimates, you can also say it is probably average and compare it to others averages, but you can not make up sizes for individuals that are not even found. the differences between averages and max sizes are not always that great, you know? if you found a modern grizzly, you could get a very wrong idea of its maximum size, but if you found other animals its a different story. do you want to claim sue or if you want MOR 008 were the largest T. rexes? certainly not! Do you know anyone who makes up hypothetical max figures for animals with only one specimen known? You know me well enough to know I´m everything but a guy that is overly cautious and conservative, and everything but a guy who does naturally favour T. rex everywhere, but I´m not using unscientific metods. many scientits are often too cautious imo, but making guesses on non existand specimens is too much. Science is about confirmed things, things you have material of, not things that you are making nothing but guesses about. Edited by theropod, Nov 10 2012, 06:48 AM.
|
![]() |
|
| theropod | Nov 10 2012, 06:47 AM Post #942 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
I agree |
![]() |
|
| EthanCowgill | Nov 10 2012, 07:16 AM Post #943 |
|
Unicellular Organism
![]() ![]() ![]()
|
tyrannosaurus rex 40-42+ feet in length 7.5-8.5 tons spinosaurus aegyptiacus 45+ feet long 10 tons spinosaurus was not as smart as t-rex and its dorsal spines were connected to the vertebre so if it ever fell over or was bitten in the sale it would be parylized |
![]() |
|
| Fragillimus335 | Nov 10 2012, 01:30 PM Post #944 |
|
Omnivore
![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Nope, the spinal cord is in the neural canal, a Spinosaurus could have its entire sail torn off, and survive, as long as it doesn't bleed to death...
|
![]() |
|
| SpinoInWonderland | Nov 10 2012, 07:51 PM Post #945 |
|
The madness has come back...
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Intelligence doesn't play a role in this battle, and the spinal cord is not in the dorsal spines, so even if Spinosaurus' dorsal spine was to be removed completely, it would still be fine... |
![]() |
|
| 2 users reading this topic (2 Guests and 0 Anonymous) | |
| Go to Next Page | |
| « Previous Topic · Dinosauria Interspecific Conflict · Next Topic » |
| Theme: Dinosauria light | Track Topic · E-mail Topic |
2:23 AM Jul 14
|
Powered by ZetaBoards Premium · Privacy Policy


)



![]](http://z4.ifrm.com/static/1/pip_r.png)





2:23 AM Jul 14