In a prehistoric forest, some 80 million years ago, a stocky, 5-meter-long armored dinosaur with a spiky back ambles about on four short legs, slowly chewing on a snack of plant material.
"That's the base anatomy they'd be working with. And then birds evolved these additional ways of producing sounds where they can modify the sounds coming out of their throat in a more nuanced way."with an internal view to its larynx. The cricoid is seen in purple, while the green represents the arytenoid, which assists in sound production.
The syrinx of a bird has two separate 'pipes', which allows them to make two different calls at once. Birds also have another structure sitting up higher in their windpipes that allows them to further modulate the sounds they are producing deeper down. Modern birds are descended from avian dinosaurs, and yet because the voice box is made of soft tissue, very few ancient examples have been found in fossil form. The oldest avian syrinx ever found isUntil now, however, a fossilized larynx has never been reported in a non-avian archosaur.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
Elephant birds: First DNA study of fossil eggshells hints new lineageA DNA study of fossil elephant bird eggshells advances our understanding of the evolution and distribution of the megafauna that once roamed Madagascar.
Les mer »
World's first low methane-emitting sheep joins forces with UK farmersIn a bid to bring down greenhouse emissions, British farmers are trying to breed low-methane emitting sheep via genetic engineering.
Les mer »
Paving the way for the world's first RSV vaccine, FDA advisers recommend shot from PfizerBREAKING: FDA advisers recommend that the agency approve the country’s first RSV vaccine for older people, a shot from Pfizer for adults ages 60 and up.
Les mer »
First Mover Asia: NFTs Have a ‘Digital First Sale’ ProblemGood morning Asia, here's what's making news today: 1. Copyright law related addressing digital-first sales has not caught up to blockchain. 2. Short interest rises on China tokens. TheSamReynolds reports
Les mer »
European stocks edge higher; Chinese data hints at global recovery By Investing.com⚠️BREAKING: *EUROPEAN STOCKS EDGE HIGHER ACROSS THE CONTINENT TO START THE MONTH AS CHINESE DATA HINTS AT GLOBAL RECOVERY - 🇪🇺🇩🇪🇫🇷🇮🇹🇪🇸🇬🇧
Les mer »
7 Unanswered Star Trek Questions About DiscoveryStar Trek: Discovery taking place in the 32nd century allows the show to answer questions both about Star Trek's past and its far future.
Les mer »