A 70-year-old dinosaur and replace the teeth as soon as the sharks

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Dinosaurs may be extinct, 65 million years ago, a massive asteroid strike, but it is one of the last species on the planet, and had little in common with one of the most fearsome creatures — sharks.

The researchers looked at the flesh-eating Majungasaurus, the apex predator of its ecosystem, and found that they have more of their teeth between 2 and 13 times faster than all other carnivorous dinosaurs, it is growing a new tooth every two months.

“This meant that they had to have their teeth quickly as possible, because they have to gnaw on the bones,” the study’s lead author, Michael D ” Emic, is an assistant professor of biology at Adelphi University, said in a statement. “There Is independent evidence for this is in the form of scratches and dents, which is consistent with the distance and the size of their teeth for a variety of bone—bones of the animals that are their prey.”

Computed tomography (CT) scan-generated models of the jaw of Majungasaurus (on the left), they also suggested (in the middle), and Allosaurus (right), with a microscopic view of the interior of their the teeth at the bottom of each model. Stripes are running from top-left to bottom-right in each of the microscopic image, are daily deposited with the incremental lines, which reduces the amount of time it took for the tooth to grow up to be reconstructed. Credit: PLOS ONE


While its teeth were blade-like, Majungasaurus, not-for strong teeth, similar to sharks or the discovery of the dinosaurs, causing them to regenerate at such a rapid rate, and D’Emic, are added.

The researchers were able to explore the findings with the help of computed tomography (CT) scans on the integrity of the jaw and to visualize the unerupted teeth to grow down deep in the innermost part of the bone,” according to the statement. They have been compared with two other species of meat-eating dinosaur, the Allosaurus, and they also suggested, to give them a greater idea of in which the tooth is growing to a pattern.

The frightening, Majungasaurus crenatissimus was one of the slowest-growing of the dinosaurs out of the picture.
(Krause, D. W., et al. An overview of the history of discovery, taxonomy, phylogeny, and biogeography of Majungasaurus crenatissimus from the late Cretaceous of Madagascar. 2007. Reprinted with the permission of the Society of Vertebrate Paleontology)

“This project is yet another aspect of the biology of Majungasaurus, and predatory dinosaurs in general,” said one of the study’s co-authors, Ohio University, professor Patrick O’connor, “is the follow-up phase of the study, based on recent field research.”

The study, which was published in the journal PLOS ONE.


Researchers have found a number of significant discoveries about the meat-eating dinosaurs in the last few months, including a finding of the oldest in the world, meat-eating dinosaur, known as a Gnathovorax cabreirai in Brazil.

The “apex predator” lived 230 million years ago, when South America was still part of the supercontinent Pangea. Researchers have discovered the fossils of the dinosaur that was “a complete and well-preserved, including the teeth and jaws that is most likely made out of a creature a ‘killing machine’.

In September, the researchers have found out that the Tyrannosaurus rex is the fiercest predator ever to hit the Earth, it had a small skull, which may be of the order does not have to break his own bones with its bite force, while at the same time, devouring her to death.


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