Spinosaurus vs. T. rex Scene

In Jurassic Park III, a Spinosaurus strands the film's main characters on Isla Sorna by causing their plane to crash. Afterwards, the characters escape, only to bump into a sub-adult bull T.rex, who is eating a kill. The T.rex then, inadvertently, chases the characters back to the Spinosaurus, which begins the most epic (and controversial) scene ever depicted. While the characters flee in panic, the two giant theropods battle each other. After a couple of taunting roars at each other, and nearly stepping on Alan Grant, the T.rex grabs the Spinosaurus in the neck with its mouth and slams it to the ground. The rex then swings the Spinosaurus around for a short while, until the Spinosaurus breaks free and tries to bite the giant carnivore. The Spinosaurus then bites the rex at its upper right thigh and slash at its ribcage, and the latter headbutts the former, only to be stunned. Allegedly, the Spinosaurus would then grab the T.rex by the neck, and in one fluid moment, he twists it (a snap can be heard). The T.rex falls to the ground dead, and the Spinosaurus roars in victory, and persumably feast on the fallen tyrant dinosaur.

Trivia

 * According to paleontologist Jack Horner, who is a consultant for the Jurassic Park trilogy, the reason for the Spinosaurus to appear in Jurassic Park III is to replace T.rex as the main dinosaur after the two previous movies.
 * Horner's most recurring (and controversial) theory is that T.rex is purely a scavenger, rather than a hunter, due to its short arms, this also includes other giant theropod with short arms like Giganotosaurus and Carcharodontosaurus, the latter live on the same continent as Spinosaurus. He claims true hunters need long front limbs to catch their prey, which is where he came up with the idea for Spinosaurus.
 * In reality, T.rex would have the battle as it has the strongest bite and teeth. T.rex's teeth are round and robusted, which is ideal to crush bones; while Spinosaurus' teeth are conical like a crocodile, and is design to grip slippery prey like large fish. The T.rex's bite would've kill the unfortunate animal instantly, and it would've retain its title as the "King of All Dinosaurs."
 * Many fans speculated that the T.rex killed in the film is the baby from The Lost World. This is not true; the baby T.rex in TLW is a female, and when female T.rex mature, they are greyish-brown in color. Male T.rex gets a stripped green coloration when they get older. So the sub-adult T.rex in JPIII is a male, and is likely a rogue.
 * Another theroy in that the T.rex in JPIII isn't the baby from TLW is the location the film takes place. The event of TLW tooks place on the southeastern portion of Isla Sorna, which is where the T.rex family lives; whereas JPIII took place on the northwestern part of the island, and the sub-adult T.rex in the film could likely be a rogue.