10 Little-known prehistoric beasts with incredible claims to fame – top10 ace enfermedades lumbares

From sea lion–like whales that popped above water to give birth to the VW Beetle–sized armadillo that gave up its shell for the benefit of humanity to a terrible escoliosis dorsolumbar tratamiento armored frog that snatched up cute little baby dinosaurs, the prehistoric world was teeming with fascinating but little-known life-forms.

One delectably rare fossil of a pregnant mother and her unborn calf supports the land-birth theory. The 48-million-year-old calf is positioned headfirst in the womb like land mammals whereas aquatic creatures are escoliosis dorsal dextroconvexa positioned tailfirst to avoid drowning before the end of labor. 9 Bus-Sized Crocodiles That Ruled The Seas

Like the modern crocs on Nat Geo lumbar herniated disc symptoms and Science, Machimosaurus made its living as an ambush predator.

It snapped up sea creatures as well as land creatures that ventured too close to the shore. And with its short, rounded teeth, it could have easily ground prehistory’s large turtles into dust.

Around six million years ago, the wetlands and escoliosis lumbar izquierda swampy forests of southwest China housed wolf-sized otters that could mess you up spectacularly. The 50-kilogram (110 lb) Siamogale melilutra wasn’t just big, it was a top predator with a surprisingly strong bite escoliosis lumbar en adultos.

Unlike modern otters that feast on plants and small animals, including rodents and crabs, S. melilutra chomped through the thicker shells of large mollusks and turtles and even through bird bones for additional nutriment. [3] 7 A Dinosaur Equipped With Sails

These impressive skin flaps could have helped to dissipate heat. Or the lumbar hernia symptoms sail may have been used for mating displays and then was evolutionarily selected because lady Amargasauruses preferred prominent spines and sails—and you know they all did. 6 Ankylosaurs Survived Thanks To Nasal Air Conditioning Systems

In addition to smelling things, noses also heat and humidify inhaled air. In birds and mammals like us, a furl of bones and cartilage improves escoliosis dorsal derecha heat exchange by increasing surface area. But for ankylosaurs like the hippo-sized Panoplosaurus and the rhino-sized Euoplocephalus, evolution followed a different route.

CT scanning and fluid dynamics revealed “insanely long nasal passages coiled up in their snouts” which researchers liken to crazy escoliosis tratamiento fisioterapeutico straws. And they helped a lot. Just by playing with nasal passage geometry, evolution found a way to increase the gigantic dinosaurs’ heat-transfer rates by 50 percent. [5]

But recent research contends that they sported a full spectrum of feathers, according to 160-million-year-old remains uncovered at the Daohugou Formation in Mongolia. The remains dolor lumbar izquierdo causas are so finely maintained by nature’s serendipity that they apparently preserved detail all the way down to the individual feather.

Like the modern armadillo, it carried dome-like armor made of bony plates. But other than its appearance, it wasn’t too threatening to others because it ate escoliosis causas plants in its native South American swamplands. It didn’t even have a weaponized club-tail like its fellow glyptodonts.

The Glyptodon showed up on the evolutionary scene two million years ago and disappeared around escoliosis dorsal derecha sintomas 10,000 years ago—probably with a lot of help from human hunters, who sometimes used its discarded shell for temporary shelter. [7] 3 The Frog That Ate Baby Dinosaurs columna lumbar rx

It had a cranial shield to protect its noggin and insane bite strength which helped it to ambush its prey, as per modern horned frogs. According to researchers, it could have crunched baby dinosaurs with a bite that imparted 2,200 newtons, as much force as a wolf escoliosis consecuencias or even a tiger. [8] 2 Beaked, Turkey-Sized Ornithopods That Swarmed Prehistoric Plains

Some of the most successful dinosaurs of all time—such as the ornithopods—weren’t at all fierce. The ornithopods were bipedal plant grazers that became one of the most successful groups during the Cretaceous period 146 million to 66 million years ago.

Based on scant dolor lumbar ejercicios remains, including a complement of tail bones and a bit of foot found in Australia, researchers pieced together the ornithopods’ Diluvicursor pickeringi. This beaked, turkey-sized animal straddled the edge of the Antarctic Circle 113 million years ago when Antarctica and Australia were still connected.