My Top Ten Longest Theropods

Just a few criticisms, if I may. T. rex likely was smaller than 45 feet. Most specimens centered around 10-11m as adults. Either Sue or C. rex are the largest known by a good bit, both around 12.8 meters and 7 tons when fleshed out, the next biggest being under 40 feet by a little bit. Newer estimates say Oxalaia got downsized to 11.8-12 m, but newer isn't always better. Scaling from Irritator, which it may represent an adult form of, Oxalaia is around 46 feet so your measurements are fully within possibility. Regarding 50 foot Giganotosaurus: my sister's doubting her scaling and measuring now, wondering if she made an error. Naturally, I grow doubtful as well, knowing she saw more of it than i did. She really wishes she had studied the remains more in depth before selling them, and plans to buy a bone or two back soon or at least study them more. She may just be paranoid, though. Lastly, I think you should bump up Spinosaurus in weight. I once told my sister Spino was probably 9 tons and I got a response like this: *stops typing, looks at me and shakes her head slowly before resuming* "Look at this Struthiomimus" *pulls up skeleton image on laptop* "It's an ostrich with a tail and long arms. So, let's say it's about 14 feet and weighs 330 pounds. Using basic square-cube scaling..." *Looks at me for a moment in awkward silence, rolls eyes, does math, lectures me for being too lazy to do it myself* "An 18 meter Struthiomimus would weigh a tiny bit over 12 tons. See how gracile this ornithomimid is?" *shows me pictures* *I nod* "Now look at these spinosaurs" *pulls up Suchomimus, Spinosaurus, Baryonyx and etc. skeletons* "They are much more robust. A Spinosaurus at 17 meters wound weigh far more than 12 tons. Having a muscular ridge, heavier arms, a heavier skull, a heavier neck and an overall just much heavier build, I daresay 12 tons is conservative." Other than that, this seems 100% agreeable. Struthiomimus [img]http://fc03.deviantart.net/fs70/f/2013/196/5/1/struthiomimus_skeleton_at_the_amnh_by_kylgrv-d6dkz7c.jpg[/img] Ostrich [img]http://evillusion.files.wordpress.com/2007/12/ostrich-skeleton.jpg[/img] Spinosaurus [img]http://fc04.deviantart.net/fs71/i/2010/061/3/0/Spinosaurus_skeleton_by_felipe_elias.jpg[/img] Suchomimus [img]http://archosaurmusings.files.wordpress.com/2012/05/suchomimumside052212.jpg[/img]

Cool, but: Tarbosaurus at 6 tons is likely too heavy. More like to 4.5-5 t. Bahariasaurus at that length is likely heavier. Saurophaganax is recently down sized from 13 to 11,5 m, as the homerus of the largest specimen is downsized from 545 to 480 mm. The largest know T.rex is "Sue", and it was 12,3 meters long. Exist evidence for larger specimens, but these specimens were often made-up by fanboys and very unreliable, as they were so fragmentary. Oxalaia is recently downized at 11-12 m by Holtz. Giganotosaurus was rather 12,4-13,2 from the specimens that we have. Spinosaurus was heavier at that length.

Okay, DinoFights that is very interesting, and that means that Spino would be by far the largest dinosaur. As for T. rex size, have we ever found the biggest of its species, ever? I bet the the very, very maximum a T. rex ever got is 45 feet long. That really goes the same for Giganotosaurus, but I think Giganotosaurus had an average of around 46-47 feet long. Going for Oxalaia, Saurophaganax, this also works, but I really didn't use that because I believe that they make it i that long sometimes, but not always. If Tarbosaurus was 40 feet and 4.5 tons, then a 30 foot Iguanadont named Lurdusaurus would be heavier then it at 5-6 tons.

My own is: 1. Spinosaurus 46-52 ft long / 14-16 m 2. Mapusaurus 40-44 feet long / 12,2-13,6 m 3. Giganotosaurus 41-43 feet long / 12,4-13,2 m 4. Carcharodontosaurus 40-43 feet long / 12-13 m 5. Tyrannotitan 37-41 feet long / 11,4-12,4 m 6. T.rex 36-40 feet long / 11-12,3 m 7. Chilantaisaurus 36-40 feet long / 11-12 m 8. Suchomimus 36-40 feet long / 11-12 m 9. Deinocheirus 33-40 feet long / 10-12 m 10. Bahariasaurus 27-40 feet long / 8-12 m

I must agree with your Mapusaurus length. 46 feet seems very good

First off, we all know what my Tyrannosaurus size estimates are like. Average 40-43 ft long and 7-8 tons with 50 ft long and 9-11 tons as the max. Keep in mind Tyrannosaurus grew throughout it's life. An old Rex could be bigger than say 40 ft long. As far as evidence goes, keep in mind, every story, rumor, and myth has a shred of truth to it. Something had to inspire the tale of Loch Ness. Something had to inspire the theory that Megalodon is still alive. There has to be some truth to the theory that Tyrannosaurus could be up to 50 ft long.

How did Rex average 40-43 feet when no specimen 43 feet has been found? The average Rex is 11 (36 feet) meters. Sue is up to 42 feet and that's it. Maybe C. Rex is 43 if you add a longer tail. By no stretch of imagination did T. rex average 40-43 feet. 50 foot rex was inspired by 1.) the 22 m Rigby Rex that is no longer considered even slightly valid, and 2.) the UCMP toe bone that probably wasn't even tyrannosaurian. It was too wide, not tall enough and not long enough. The discoverer called it a T. rex bone based on size and location, which is not a good way to do things. As for Loch Ness and Megalodon, I'm leaning towards sturgeon for LN because original stories describe the monster as looking like "an overturned canoe". But Megalodon is another story, especially since I heard of William Beebe's bathysphere encounter with a 40 foot fish that swam by, resembling a shark. William Beebe is an extremely reliable scientist, having discovered several species that nobody believed existed until many years after his death.

I think the lock ness monster is just a Greenland shark. I saw the river monsters about it and I think that a Greenland pretty well matches some descriptions.