My Dinosaur Speed

I think yours was a pretty good estimate set for speed. I don't see why some ornithomimids couldn't run as fast as ostriches at 65 mph, being nearly identical in shape and proportions. Dromaeosaurs had powerful legs for running and probably hit 45-55 mph Deltadromeus and Bahariasaurus could likely run between 35 and 50 mph depending on what build you take for them. From known specimens they appear to be thin and sleek with especially long legs and arms like those of ornithomimids which is where the Bahariasaurus- Deinocheirus theory comes from. Utahraptor was big, fast and smart and, being lighter but similarly built to Deltadromeus, could probably run just as fast if not faster. Spinosaurs are a problem because most specimens are juveniles or subadults and would have proportionately long skulls and legs with thinner bodies than adults. If you keep this build for huge 40+ foot adults, like Suchomimus, Phobodon, Oxalaia and Spinosaurus, they would have no problem hitting 25. If you bulk them up to adult proportions they maybe hit 25 to 27 at max. Ceratosaurus were robust and muscular but had decent running legs and may have hit 20-30 mph depending on how stocky you make them. True allosaurs and neovenators probably passed 30 mph because they were light, had good respitory systems, hollow bones, a sleek build and long legs. I can see Allosaurus hitting 35 when in a straight dash. Carcharodontosaurs were almost all 40+ feet and were basically all allosaurs on steroids. They had almost everything the same proportionately and could hit 30 for the most part with maybe Mapu being faster but most specimens were juveniles and all of the 40-46 foot adults were fragmentary. Acrocanthosaurus was unusually robust and probably didn't pass 20 very often. Megalosaurs were between allosaurs and carcharodontosaurs in robusticity but had similar proportions. I'd say 30 ish. Abelisaurs vary a lot. Some, namely Carnotaurus, were speed demons. Carno had long legs and a sleek build designed for running and estimates made by some scientists are hitting 43 mph. Majungasaurus, on the other hand, had weird short legs and probably hit 20 or 25. Ekrixinatosaurus and Rajasaurus were more power than speed and probably were 25 mph runners. Tyrannosaurs were also varied. Smaller ones, like Gorgosaurus and Albertosaurus, were probably capable of hitting 30-33. Tarbosaurus and Zhuchengtyrannus could, being somewhat light, hit 25-28. Tyrannosaurus was robust with a less aerodynamic body built for power instead of speed and had trouble making it much past 20 IMO. Pachycephalosaurs were built much like hadrosaurs and could hit 30. Hadrosaurs like Parasaurolophus hit 35 on two legs because they had to outrun predators and were lightly built. Shantungosaurus, Huaxiaosaurus, Lambeosaurus and Magnapaulia were way more robust and fought instead of running, so they hit 20 maybe. Ceratopsians were sort of like rhinos and could probably hit 30 on a really good charge. Therizinosaurus had a weird build so its hard to say. With short tails, long necks, broad and deep bodies with medium sized legs I'd say 20-25? Sauropods were probably pretty slow with all the gravity they had pushing down on them as well as their thick elephantine legs. I'd say 10-15 mph? Just by pure stride size. Prosauropods probably were therizinosaur-like in speed. Can't imagine sauropods ran from or for much. Dilophosaurs were probably pretty fast, 35 ish.

Well fourty five mile per hour raptors are bad enough. The raptors from jp3 where running across the fields at 45 mph, so if they are faster, then nobody can acuse Muldon of saying they could be cheetah speed.

I see the ornithomimids hitting speeds of up to 65 miles per hour. The raptors could hit around 50 miles per hour at the most, with Utahraptor being slightly slower, about 20-25 miles per hour. Utahraptor had pretty short legs for it's size. Not too short, but a little shorter. Theropods in the same size class as T-rex and Giganotosaurus probably ran anywhere between 15 and 25 miles per hour, depending on the build and anatomy of the dinosaur. Abelisaurs were seem to be a little slow. Majungatholus does not seem to be able to get past 15 miles per hour, with the fastest abelisaurs reaching 20 miles per hour. Allosaurus and carnivores it's size were probably running between 20 and 30 miles per hour. The fastest tyrannosaurs, Albertosaurus and Nanotyrannus, could probably run about 30-35 miles per hour, with dinosaurs like Deltadromeus having a comparable top speed. Early tyrannosaurs like Guanlong and Dilong probably hit speeds of up to 40 miles per hour. The smallest carnivores like Sinornithosaurus and Compies probably ran around 30-35 miles per hour. Hadrosaurs could probably hit 25 miles per hour on their back legs and ceratopsians probably could charge at speeds of 20 miles per hour. Sauropods and armored dinosaurs like Ankylosaurus and Stegosaurus probably did not run faster than 5-8 miles per hour. Finally, the smaller herbivores like the hypsylophodonts probably ran up to 30 miles per hour. Those are my dinosaur speed estimations.