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T. rex's incredible biting force came from its stiff lower jaw

The fearsome
Tyrannosaurus rex could generate tremendous bone-crushing bite forces thanks to a stiff lower jaw. That stiffness stemmed from a boomerang-shaped bit of bone that braced what would have been an otherwise flexible jawbone, a new analysis suggests.
Unlike mammals, reptiles and their close kin have a joint dubbed the intramandibular joint within their lower jawbone, or mandible. New computer simulations show that with a bone spanning the IMJ,
In today’s lizards, snakes and birds, the IMJ is bound by ligaments, making it relatively flexible, says study author John Fortner, a vertebrate paleontologist at the University of Missouri in Columbia. That flexibility helps the animals maintain a better grip on struggling prey and also allows the mandible to flex wider to accommodate larger morsels, he notes. But in turtles and crocodiles, for example, evolution has driven the IMJ to be rather tight and inflexible, enabling strong bite forces. ....

United States , John Fortner , Thomas Holtz Jr , Lawrence Witmer , University Of Missouri , College Park , Ohio University , University Of Maryland , American Association Of Anatomy , American Association , Thomas Holtz , ஒன்றுபட்டது மாநிலங்களில் , ஜான் அதிர்ஷ்டசாலி , தாமஸ் ஹோல்ட்ஸ் ஜூனியர் , லாரன்ஸ் வீட்மேற் , பல்கலைக்கழகம் ஆஃப் மிச Ou ரி , கல்லூரி பூங்கா , ஓஹியோ பல்கலைக்கழகம் , பல்கலைக்கழகம் ஆஃப் மேரிலாந்து , அமெரிக்கன் சங்கம் , தாமஸ் ஹோல்ட்ஸ் ,

How did T. rex break bones with its bite?

How did T. rex break bones with its bite?
3D modelling suggests it chomped like an alligator by anchoring its jaw in place.
The
Tyrannosaurus rex might be known for its ferocity and its mouth full of serrated teeth, but how did it actually bite? New research suggests the T. rex might have crunched like an alligator.
Similar to modern day reptiles, dinosaurs had a joint in the middle of their lower jaw called the intermandibular joint. Palaeontologists have puzzled over how this joint was used by T. rexes to crunch bones, even wondering whether it could have been flexible like a snake’s. ....

United States , John Fortner , University Of Missouri , American Association For Anatomy , Naturalis Or Natural History Museum Of Leiden , American Association , Natural History Museum , Dean Mouhtaropoulos , ஒன்றுபட்டது மாநிலங்களில் , ஜான் அதிர்ஷ்டசாலி , பல்கலைக்கழகம் ஆஃப் மிச Ou ரி , அமெரிக்கன் சங்கம் க்கு உடற்கூறியல் , அமெரிக்கன் சங்கம் , இயற்கை வரலாறு அருங்காட்சியகம் ,

Solución al misterio sobre la anatomía de la mandíbula del T. rex

Solución al misterio sobre la anatomía de la mandíbula del T. rex
europapress.es - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from europapress.es Daily Mail and Mail on Sunday newspapers.

John Fortner , Masticaban Rex , University Of Missouri , History Carnegie , New Light , ஜான் அதிர்ஷ்டசாலி , பல்கலைக்கழகம் ஆஃப் மிச Ou ரி , புதியது ஒளி ,

Resuelven el gran misterio sobre la poderosa mandíbula del T-REX - Periodista Digital

Resuelven el gran misterio sobre la poderosa mandíbula del T-REX - Periodista Digital
periodistadigital.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from periodistadigital.com Daily Mail and Mail on Sunday newspapers.

John Fortner , University Of Missouri , New Light , ஜான் அதிர்ஷ்டசாலி , பல்கலைக்கழகம் ஆஃப் மிச Ou ரி , புதியது ஒளி ,

T. rex delivered bone-crushing bites by keeping a stiff jaw, research suggests

The fearsome tyrannosaurus rex bit through bone by keeping a joint in its lower jaw steady like an alligator, rather than flexible like a snake, a new study suggests.
Researchers say the finding over the famous carnivorous dinosaur sheds new light on a mystery that has puzzled palaeontologists.
Dinosaurs had a joint in the middle of their lower jaws, called the intramandibular joint, which is also present in modern-day reptiles.
Previous research suggested this joint was flexible – like in snakes and monitor lizards, helping carnivorous dinosaurs to keep struggling prey in their jaws.
However, it has been unclear whether the jaws were flexible at all, or how they could be strong enough to bite through and ingest bone – which T. rex did regularly, according to fossil evidence. ....

United States , Mashonaland East , John Fortner , Ben Birchall , University Of Missouri , American Association For Anatomy , Salisbury Cathedral , American Association , Experimental Biology , ஒன்றுபட்டது மாநிலங்களில் , மஷோனலண்ட் கிழக்கு , ஜான் அதிர்ஷ்டசாலி , பென் பிர்ச்சால் , பல்கலைக்கழகம் ஆஃப் மிச Ou ரி , அமெரிக்கன் சங்கம் க்கு உடற்கூறியல் , சாலிஸ்பரி கதீட்ரல் , அமெரிக்கன் சங்கம் , சோதனை உயிரியல் ,