Thursday, May 18, 2017

The Phenomenal Power of the Terror Lizard - Science

You know Tyrannosaurus rex is one majorly frightening terror lizard but he had astounding powers.  When he bites, he's going to crush your entire neighborhood.

The giant Tyrannosaurus rex pulverized bones by biting down with forces equaling the weight of three small cars while simultaneously generating world record tooth pressures, according to a new study by a Florida State University-Oklahoma State University research team.

In a study published today in Scientific Reports, Florida State University Professor of Biological Science Gregory Erickson and Paul Gignac, assistant professor of Anatomy and Vertebrate Paleontology at Oklahoma State University Center for Health Sciences, explain how T. rex could pulverize bones -- a capacity known as extreme osteophagy that is typically seen in living carnivorous mammals such as wolves and hyenas, but not reptiles whose teeth do not allow for chewing up bones.

Science Daily:  Secrets behind T. rex's bone crushing bites: T. rex could crush with 8,000 pound bite forces


Repeating Ithaka Disclaimer:  the articles use he for applications requiring an undefined gender because English is a stupid language.  We won't use they as an alternative because it's a plural and looks equaly stupid in the wrong application.


Erickson and Gignac found that this prehistoric reptile could chow down with nearly 8,000 pounds of force, which is more than two times greater than the bite force of the largest living crocodiles -- today's bite force champions. At the same time, their long, conical teeth generated an astounding 431,000 pounds per square inch of bone-failing tooth pressures.

This allowed T. rex to drive open cracks in bone during repetitive, mammal-like biting and produce high-pressure fracture arcades, leading to a catastrophic explosion of some bones.

- SD

He doesn't just kill you; he makes you explode and, what's more, it's a catastrophic explosion.  The Rockhouse is impressed.

Watson:  catastrophe is rather an overstatement for something which is already dead.  The catastrophe obviously happened prior to that.

Details, details, Watson.  See, this is why you don't get invited to parties.


There's more since T. rex was a truly excellent bone cruncher.

In current day, well-known bone crunchers like spotted hyenas and gray wolves have occluding teeth that are used to finely fragment long bones for access to the marrow inside -- a hallmark feature of mammalian osteophagy. Tyrannosaurus rex appears to be unique among reptiles for achieving this mammal-like ability but without specialized, occluding dentition.

The new study is one of several by the authors and their colleagues that now show how sophisticated feeding abilities, most like those of modern mammals and their immediate ancestors, actually first appeared in reptiles during the Age of the Dinosaurs.

- SD

Since my friend, John Wolf, is not here and wolves were mentioned in a particularly ferocious way, the advisory needs to be passed along that no human was ever killed by a wolf attack.  We have never validated the idea but we like it since wolves are probably too smart for that.

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