T.Rex Had Serrated Teeth To Tear Away At Its Prey

Posted: Jul 29 2015, 7:51am CDT | by , in Latest Science News


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T.Rex had Serrated Teeth to Tear Away at its Prey
Gorgosaurus is shown using its specialized teeth for feeding on a young Corythosaurus in Alberta, 75 million years ago. / CREDIT: Painting by Danielle Dufault
  • T.Rex had Specialized Teeth to Tear Away at its Prey

The T.Rex, and other dinosaurs, had special teeth to tear away at their prey. The serrated teeth allowed the vicious carnivores to penetrate the bodies of their victims.

The T.Rex, and the rest if its cousin therapods, were terrible lizards alright. They preyed upon various herbivores thanks to their teeth structure. The teeth were singular in their serrations. This unique arrangement allowed these dinosaurs to crunch the thick parts of their prey. The researchers are now clear about this new finding.

The in-depth serrated teeth structure acted like a sharp saw. It went deep into the bone marrow of the targets of the T.Rex. Two other therapods common during the Jurassic period include: the Allosaurus and the Coelophysis. The gum-like tissues that supported the vile teeth acted as shock absorbers.

They proved to be strong and tensile in their features. Thus these bloodthirsty creatures survived where many other plant-eating dinosaurs died off. They were at the top of the food chain in their times. For a period of 165 million years, they ruled the earth spreading terror via their hunger for flesh.

The research, published in the journal Scientific Reports, was conducted by Kirstin Brink, a post-doctoral researcher in the Department of Biology at UTM; Professor Robert Reisz of the Department of Biology and the UTM vice-principal of graduate studies; and colleagues at the Royal Ontario Museum (ROM) and the National Synchrotron Radiation Research Center in Taiwan.

The heirs of the T.Rex today include the Komodo Dragon. And this fierce creature too hunts down and feasts on animals larger than itself. The basic units of the teeth are the same. the way these components interlock make the serrated teeth a fine tool.

"What is so fascinating to me is that all animal teeth are made from the same building blocks, but the way the blocks fit together to form the structure of the tooth greatly affects how that animal processes food," Brink said.

"The hidden complexity of the tooth structure in theropods suggests that they were more efficient at handling prey than previously thought, likely contributing to their success."

The heirs of the T.Rex attack in the most savage and brutal manner and reduce their prey to a mass of quivering jelly in record time. And the surprising thing was that these dinosaurs re-grew their teeth throughout their lifetimes. Most of the razor sharp teeth resembled the sort of knives used to cut a rare steak in a restaurant.

The serrations were the peak of evolutionary design for a carnivore. Like a shark’s teeth or a piranha’s chompers, these weapons allowed dinosaurs to attack. They brought down prey many times their size.

"What is startling and amazing about this work is that Kirstin was able to take teeth with these steak knife-like serrations and find a way to make cuts to obtain sections along the cutting edge of these teeth," said Reisz.

"If you don't cut them right, you don't get the information. This brought about a developmental explanation for the tooth formation; the serrations are even more spectacular and permanent."

Special microscopes yielded the chemical composition of the fossils placed beneath their lens. The serrated teeth got examined. The teeth of the Gorgosaurus, another therapod, got examined too. It shows in a lucid manner that form follows function in case of the terrible lizards.

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