Újra a T. rex a legnagyobb ragadozó dinoszaurusz?

Nem volt nehezebb sem a Giganotosaurus sem a Spinosaurus, és nem volt gyorsabb a Giganotosaurus:

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"Sorry, but there's no way Tyrannosaurus, a theropod with actual cursorial adaptations, was slower than Giganotosaurus, a theropod with a lack thereof (and by 13 miles per hour at that!). And you know, if I didn't know any better, I would have thought you cherry-picked your sources."

"In examining absolute limb lengths in theropods, it is found that both the tibia and metatarsus increase as femur length increases. These elements both grow with negative allometry (allometric slopes of 0.91 and 0.93 when the log of tibia length or log metatarsal III length are plotted against log femur length, respectively), so that as femur size increases, the relative size of the tibia and metatarsus decreases. This phenomenon is common to many groups of animals, including ungulate, carniverous [sic], and marsupial mammals, and many groups of flightless birds (Holtz, 1995). For a given femur length, however, tyrannosaurids and ornithomimids have a longer absolute (and thus relative) tibia and metatarsus length than those of other theropods.

In other words, for a given femur length, tyrannosaurids have a longer distal limb length than those of most other theropods. Similarly, tyrannosaurids and ornithomimids of the same femur length have comparable tibia and metatarsus lengths. Thus, for a given angle of motion of the femur, a tyrannosaur could cover more distance than an allosauroid, ceratosaur, or other large-bodied theropod of the same femur length. Because distance covered per unit of time is the definition of speed, all other things being equal, tyrannosaurids should have been faster than any other comparably-sized theropod."

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