Forever-growing teeth led to some interesting evolutionary developments for the carnivorous sabertooth.
. This is the way the eyes move together and point inward when they look at objects that are close by.had an orbital convergence value as low as 35 degrees, which is pretty extreme compared to that of a typical predator at around 65 degrees.was able to compensate for having its eyes on the side of its head by sticking its orbits out somewhat and orienting them almost vertically, to increase visual field overlap as much as possible,” said co-author Analia M.
. “Even though its orbits were not favorably positioned for 3D vision, it could achieve about 70 percent of visual field overlap—evidently, enough to make it a successful active predator.”was able to compensate for low orbital convergence appears to be the key to understanding how this extinct marsuipial’s skull was put together.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
Ancient marsupial sabertooth had eyes like no other mammal predatorThe wide-set eyes and exaggeratingly long teeth likely helped Thylacosmilus atrox become a successful hunter.
Les mer »
How the 'marsupial sabertooth' thylacosmilus saw its worldA new study investigates how an extinct, carnivorous marsupial relative with canines so large they extended across the top of its skull could hunt effectively despite having wide-set eyes, like a cow or a horse. The skulls of carnivores typically have forward-facing eye sockets, or orbits, which helps enable stereoscopic (3D) vision, a useful adaptation for judging the position of prey before pouncing. Scientists from the American Museum of Natural History and the Instituto Argentino de Nivología, Glaciología, y Ciencias Ambientales in Mendoza, Argentina, studied whether the 'marsupial sabertooth' Thylacosmilus atrox could see in 3D at all. Their results are published today in the journal Communications Biology.
Les mer »
Kate Hudson, 43, Reveals the ‘Staple’ Drugstore Mascara She ‘Will Forever Love’The affordable pick is a true classic—you might even recognize it from your teenage years.
Les mer »
Idaho victim Kaylee Goncalves’ sister says she will ‘be in denial forever’Autumns Goncalves, sister of slain University of Idaho student Kaylee Goncalves, has shared new videos expressing her grief – saying she is still in denial and wants her “old life back.”
Les mer »
'Forever chemicals' in Columbus' water supply, but at levels below EPA's proposed standardThe federal government has proposed limiting PFAS chemicals to the lowest levels tests can detect.
Les mer »
How the US will remove ‘forever chemicals’ from its drinking waterThe EPA has proposed a strict PFAS limit, but it will take money and innovative technologies to implement the plan.
Les mer »