Navigation Links
Fused nasal bones helped tyrannosaurids dismember prey

New evidence may help explain the brute strength of the tyrannosaurid, says a University of Alberta researcher whose finding demonstrates how a fused nasal bone helped turn the animal into a "zoological superweapon."

"Fused, arch-like nasal bones are a unique feature of tyrannosaurids," said Dr. Eric Snively, a post doctoral research fellow at the University of Alberta. "This adaptation, for instance, was keeping the T. rexes from breaking their own skull while breaking the bones of their prey."

Snively and co-authors, number-crunching physicist Donald Henderson from the Royal Tyrrell Museum of Palaeontology and Doug Phillips from the University of Calgary, compared the skulls and teeth of a number of tyrannosaurids to non-tyrannosaurids. In one of the first studies that looked at the structural mechanics of dinosaur skulls, the scientists used CT scans to investigate such factors as teeth bending strength and nasal and cranium strength. The research is published in the journal Acta Palaeontologica Polonica.

Tyrannosaurids differ from other dinosaurs in the great robustness of their teeth and skulls, enlarged areas for attachment and expansion of jaw muscles and the consequent ability to bite deeply in the bone.

Snively's team found that fused tyrannosaurid nasals were stronger than unfused carnosaur nasals. This extensive fusion increased the strength of such dinosaurs as the T. rex and helped them apply powerful bites that could splinter bone. With other carnivorous dinosaurs, says Snively, their skull bones might shear apart slightly when they chomp down on other animals. "With tyrannosaurs, all the bite force was delivered to the prey," he said. "The T. rex especially had a very strong skull and jaw muscles that would turn it into a zoological superweapon.

A medium-sized T. rex had even more skull strength than a larger carnivorous creature, such as the Carcharadontosaurus saharicus, with a head nearly one and a half times as long. T. rex's neck power was similarly staggering. For instance, in a split second, a T. rex could toss its head at a 45 degree angle and throw a 50kg person five metres in the air. And that's with conservative estimates of the creature's muscle force, says Snively. "We kept the muscle numbers down because we thought they couldn't possibly be that powerful, but Tyrrell museum colleagues showed that a T. rex's lower jaw could apply 200,000 newtons of force—that's like lifting a semi-trailer," he said. "All of the T. rex's features came together to give it the strongest bite of any land animal. The T. rex just blows everyone out of the water when it comes to strength.

"The fused nasal bones had been observed before, but no one but us and Emily Rayfield of Bristol hypothesized that the fusion enhanced the skull strength. Now we know it did."


'"/>

Source:University of Alberta


Related biology news :

1. Flu shot effective against drifted influenza, nasal spray vaccine less so
2. University of Manchester makes made-to-measure skin and bones a reality using inkjet printers
3. Signaling protein builds bigger, better bones in mice
4. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
5. NC State scientist finds soft tissue in T. rex bones
6. Beauty queens urge girls not to sacrifice their bones
7. Nanotubes inspire new technique for healing broken bones
8. Orange, grapefruit juice for breakfast builds bones in rats
9. Tiny bones rewrite textbooks
10. Smashing the time it takes to repair our bones
11. Invasive exotic plants helped by natural enemies
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/21/2016)... India , January 21, 2016 ... According to a new market research report "Emotion Detection ... and Others), Software Tools (Facial Expression, Voice Recognition ... Regions - Global forecast to 2020", published by ... is expected to reach USD 22.65 Billion by ...
(Date:1/18/2016)... Calif. , Jan. 18, 2016  Extenua ... software that simplifies the use and access of ... and go-to-market partnership with American Cyber.  ... brings extensive experience leading transformational C4ISR and Cyber ... and integrating the latest proven technology solutions," said ...
(Date:1/11/2016)... Jan. 11, 2016 Synaptics Incorporated (NASDAQ: ... today announced that its ClearPad ® TouchView ™ ... won two separate categories in the 8 th ... Best Technology Breakthrough. The Synaptics ® TDDI solution ... supply chain, thinner devices, brighter displays and borderless designs. ...
Breaking Biology News(10 mins):
(Date:2/3/2016)... COPENHAGEN, Denmark , Feb. 3, 2016 ... stage biotechnology company that applies its innovative TransCon technology ... to present at an upcoming investor conference.Event:2016 Leerink Partners ... York, NY Date:  , Wednesday, February 10, 2016 Time:  ... --> www.ascendispharma.com . --> An audio ...
(Date:2/3/2016)... 3, 2016 New Jersey Health Foundation (NJHF) ... million for researchers in New Jersey ... that demonstrates exciting potential.   James ... the New Jersey Health Foundation Research Grant Program ... educational institutions— Princeton University, Rutgers University, Rowan University ...
(Date:2/3/2016)... ... February 03, 2016 , ... ... series of potential targets (epitopes) specific to misfolded, propagating strains of Amyloid beta ... specific monoclonal antibody therapeutics for Alzheimer’s. , Following on from the first misfolded ...
(Date:2/3/2016)... (PRWEB) , ... February 03, 2016 , ... ... events annual report which summarizes and analyzes nearly 750 unique supply ... monitoring, alert, and analysis service. , Supply chain risk management practitioners subscribe ...
Breaking Biology Technology: