| 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 (459,270 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: | |
|---|---|
| Superiron21 | Jan 26 2013, 06:04 AM Post #1666 |
|
Autotrophic Organism
![]() ![]() ![]() ![]()
|
Can hurt him yes but not penetrate too much.... |
![]() |
|
| Superiron21 | Jan 26 2013, 06:08 AM Post #1667 |
|
Autotrophic Organism
![]() ![]() ![]() ![]()
|
In a fight could do damage that's for sure but not as the same damage than T-rex could do to Spino..... |
![]() |
|
| Superiron21 | Jan 26 2013, 06:11 AM Post #1668 |
|
Autotrophic Organism
![]() ![]() ![]() ![]()
|
The spino arms were used to catch preys undersized in comparisson with spino... and the claw was designed to catch squeeze things... that kind of movility spino has... I don't think arms could battle with T-rex big head and powerful body.... but could do wounds that could be possible.... |
![]() |
|
| Superiron21 | Jan 26 2013, 06:14 AM Post #1669 |
|
Autotrophic Organism
![]() ![]() ![]() ![]()
|
I´m not with you in that man.... spinos arms would never have the power to catch and hold t-rex head... that's impossible man do you have any fact that say those arms could have this extreme force?... the only thing spino could do is wound T-rex but not deadly.... |
![]() |
|
| Ausar | Jan 26 2013, 06:22 AM Post #1670 |
|
Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
T.rex 9 tons? Here's why I don't think T.rex was 9 tons; it had hollow bones like that of a bird, so it probably would've weighed less than it may seem. Nevertheless, T.rex was still heavy and IMO was 7 tons. |
![]() |
|
| Kurtz | Jan 26 2013, 06:22 AM Post #1671 |
|
Kleptoparasite
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
totally agree Spino was not a 9 tons cougar |
![]() |
|
| MysteryMeat | Jan 26 2013, 06:36 AM Post #1672 |
|
Herbivore
![]() ![]() ![]() ![]() ![]() ![]()
|
It's still denser than most birds. Just look at the skeleton. Rex has a much more robust skeleton. The density is around 890kg/m^3 in adult specimens. Large specimens like Sue, is probably 8000kg-9000kg. 7000kg is more likely an average sized specimen. |
![]() |
|
| 7Alx | Jan 26 2013, 07:20 AM Post #1673 |
![]()
Herbivore
![]() ![]() ![]() ![]() ![]() ![]()
|
JP3 Spinosaurus is 16 ft tall, while holotype (based on Hartman's scalebar) is only 12 ft. And the head is even bigger than in MSNM V4047. The body is more massive... So JP3 would be bigger, despite shorter in length than holotype. |
![]() |
|
| theropod | Jan 26 2013, 07:21 AM Post #1674 |
|
palaeontology, open source and survival enthusiast
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Mystery meat: that is the study that had the inaccurate torso reduced by a bit I assume? Superiron: Sure Spino couldn't do the same damage T. rex could do to it? that implies at parity it's weapons are four times less potent... Edited by theropod, Jan 26 2013, 07:21 AM.
|
![]() |
|
| MysteryMeat | Jan 26 2013, 07:33 AM Post #1675 |
|
Herbivore
![]() ![]() ![]() ![]() ![]() ![]()
|
Yes, they calculate values of 840-890kg/m^3, juveniles being lighter in density. Did they use Jane though, which is not a Tyrannosaurus, but Nanotyrannus. Even though Sue's ribs are not oriented in articulated position, Stan and holotype are. I also don't think the longer torso would changed density dramatically. I have seen density calculations of 900kg/m^3 before. Edited by MysteryMeat, Jan 26 2013, 07:33 AM.
|
![]() |
|
| MightyMaus | Jan 26 2013, 07:43 AM Post #1676 |
![]()
Autotrophic Organism
![]() ![]() ![]() ![]()
|
Here's how I see this fight going down. The Spinosaurus would approach the rex and try to intimidate it, if that failed and the rex attacked, the Spinosaurus would most likely have the advantage due to it's greater reach and size. Due to its reach advantage it would likely get the first bite in. I can't imagine a Tyrannosaurus escaping a ~2 ton bite from a 1.75-1.95 meter skull to the neck without SEVERE damage, if not outright death. The huge arms and size of the Spinosaurus would also help with controlling the rex. If the rex managed to survive the first bite, it may catch an arm and crush it. After that the Spino would likely knock the weakend rex over and finish it off. IMO Tyrannosaurus would not have been able to easily engage the neck of a Spinosaurus, due to the spinosaurs large height and size advantage, not to mention the large and powerful arms. Spinosaurus 90/10 Edited by MightyMaus, Jan 26 2013, 07:43 AM.
|
![]() |
|
| Grey | Jan 26 2013, 07:48 AM Post #1677 |
|
Kleptoparasite
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
What I know of that life-sized is that it is a prediction of the on going studies made at now about new material from the Kem Kems but based by its size on MNSM. This is not a personnally guessed, more original depiction of Spinosaurus. In fact I don't have man infos, the guy who reported it at first was Big Al, who often discussed with the authors. I don't know the size of the model, discussing with Big Al, he believed to remember it is 16 metres long, but I have doubts. But you can remark that Cau, Dal Sasso are standing together in the fourth photo I've posted. Perhaps they have reached a non-yet announced consensus about Spinosaurus shape and size. In any case, this model has been very seriously built. The 2014 publication is alleged to confirm it. Maybe it will, maybe there are updates on going. But I'm somewhat confident in it. |
![]() |
|
| Grey | Jan 26 2013, 07:53 AM Post #1678 |
|
Kleptoparasite
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
Fans have baptised it Spinosaurus robustus... I know that during the pre-production, Joe Johnston judged the snout of the model of Spino too much thin and asked to Horner if they could make it more massive. Horner refused. He would have been even more disappointed by the snout of the real-life animal... |
![]() |
|
| Grey | Jan 26 2013, 07:58 AM Post #1679 |
|
Kleptoparasite
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
|
You don't keep in mind that these measurements you use for Spinosaurus are far to be factual at now, this is what we are discussing for the progress of the discussion with the guys. Just like the alleged bite force. If we want argue, T.rex had to deal with...others T.rex. Yet, numerous healed scars from fights are known... I don't know either where you get with such certainity that Spinosaurus is so much higher. |
![]() |
|
| MightyMaus | Jan 26 2013, 08:04 AM Post #1680 |
![]()
Autotrophic Organism
![]() ![]() ![]() ![]()
|
But...lets say that Spinosaurus was, undoubtedly that large.. if that was the case would you favor it? |
![]() |
|
| 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