Monday April 17 2017, 12.00am, The Times. LOS ANGELES (AP) — Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth. These tunnels are impressive, some are over 2 m (6.5 ft.) wide, 1.5 m (5 ft.) high and up to 30 m (100 ft.) long. Fossils found by workers digging a tunnel for a new railway line in Los Angeles have been identified as the remains of a giant sloth and a bison. LOS ANGELES — Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth. Some are simple shafts while others are complicated works of underground engineering, with branching passages that twist and turn to form networks—the longest stretching 130 feet from end to end. But despite these creatures stretching up to 4.6 metres (15 feet) and weighing roughly 2,590 kg (5,709 pounds), a single ground sloth would have spent much of its lifespan dedicated entirely to constructing tunnels as large and extensive as the palaeoburrows are. Digging a 2,000-foot-long, five-foot-wide burrow required moving about 4,000 metric tons of dirt and rock. Tags biology extinct animal giant sloth mammals natural world prehistoric creature prehistoric mammal Science His specialty are the Giant Sloth tunnels of which he has found many, though most belong to extinct giant armadillos, some are too large to have been dug out by them, and must have been excavated by giant sloths. Later, scientists realized giant ground sloths led a subterranean lifestyle, using their large, powerful claws to dig. The giant armadillo, the largest existing member of its family, weighs between 65 and 90 pounds and is native to South America. American ground sloths from the extinct Lestodon genus. A sloth bone found by crews digging a tunnel for a new Los Angeles train line appears to be the remains of an ancient giant sloth. The discovery of this giant sloth death pit is revealing a virtual Bible of new evolutionary facts. The fossilized remains of 22 Ice Age, elephant sized sloths have been found preserved in 20,000-year-old asphalt in Ecuador. LA train tunnel diggers find fossilised hip bone of giant 1,500 pound sloth that roamed the area 11,000 years ago By Associated Press 02:45 02 Jun 2017, updated 21:46 02 Jun 2017 48 shares In fact they're estimated to be at least 8,000 to 10,000 years old. By Andrew Moseman. However, due to the massive claw marks that line the walls and the ceilings, it is now believed that an extinct species of giant ground sloth is behind some of these tunnels (known as palaeoburrows). Mar 30, 2017 ... not by one or two giant sloths. In South America, giant sloths—some the size of elephants—roamed the surface, and were, perhaps, expert tunnel diggers. The sloth remains included a 27,000-year-old tooth, arm bone, and leg bone. Thankfully, a glance at the walls quickly clears the mystery — massive claw marks line the walls and ceilings of the tunnels. These giant sloths went extinct between 14,000 and 10,000 years ago. Later, scientists realized giant ground sloths led a subterranean lifestyle, using their large, powerful claws to dig. LOS ANGELES (AP) — Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth. Don’t ever call sloths lazy again. Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth whose species grew up to 10 feet in length and weighed up to 1,500 pounds. The Giant Ground Sloth, also known as the Megatherium, was a genus of enormous rhino-sized ground sloths (as opposed to the modern-day tiny tree sloths) that were indigenous to South America and migrated and spread across the entire continent of North America. Ancient, giant sloths are the prime suspect behind the creation of these paleoburrows." But near the town of Novo Hamburgo, Brazil, there are tunnels large enough to drive a car in that were dug by neither - instead, these are the work of ancient, giant sloths. Researchers have known about these tunnels since at least the 1930s, but back then, they were considered to be some kind of archaeological structure ― remains of caves carved out by our ancient ancestors, perhaps. Ancient sloths dug Brazil’s giant tunnels. SIGNATURE: The evidence left behind by the cave's creators (Image: HEINRICH FRANK) Amilcar Adamy from the Brazilian Geological Survey investigated the cave in Rondonia, western Brazil, in 2010. Scientists believe they either were dug by ancient giant sloths or ancient armadillos. The Metropolitan Transportation Authority says a fossilized hip joint was discovered on May 16 in a layer of sandy clay 16 feet below a major thoroughfare where the new rail line is being built. Tunnels excavated by giant sloths in ancient South America still exist today. Image: S. Rae/Flickr. The Metropolitan Transportation Authority says a fossilized hip joint was discovered on May 16 in a layer of sandy clay 16 feet below a … Tunnels excavated by giant sloths in ancient South America still exist today. At first, no know geologic process could explain how these tunnels were made. "Thankfully, a glance at the walls quickly clears the mystery - massive claw marks line the walls and ceilings of the tunnels. Giant ground sloths like Eremotherium were built for burrowing. And no one's sure why they dug them. And yeah they argue a bit about what kind of animal it could be. Some are simple shafts while others are complicated works of underground engineering, with branching passages that twist and turn to form networks—the longest stretching 130 feet from end to end. Previous ideas about the tunnels have included everything from mythical monsters to ancient lava tubes, but none of hold up against the handy-work of a huge ground sloth. Moreover, the sheer size of the tunnels cannot possibly be made by any “giant” armadillos or sloths – at least, ones that we know of. However, its burrows are about 16 inches in diameter, and only up to 20 feet long. April 20, 2017. http://undergroundworldnews.comDeep inside Brazil, there are tunnels large enough for a person to walk through. Gideon Long, Santiago. “The biggest giant armadillo had a body width of 80 centimeters, while the tunnels reach widths of 1.4 meters and in addition, the ceiling is full of scratches “I personally believe they were excavated by land sloths, a group of mammals that became extinct in that area about 10,000 years ago,” says Frank. These giant sloths went extinct between 14,000 and 10,000 years ago. LOS ANGELES (AP) — Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth. In the tunnel-like caves, INAH researchers have discovered human bones, and the bones of elephant-like creatures, giant sloths, bears, tigers, and extinct species of horses, now-extinct plants … These large, furry herbivores lived for about 5.3 million years and went into […] They weighed more than an adult elephant. There are thousands of huge tunnels in the northern part of South America. Massive caves in southern Brazil are actually ancient ground sloth burrows Usually, tunnels are made either by human engineers or flowing water. (Credit: Wikimedia Commons) ( Image Source ) According to Frank, the mega tunnels measuring upto 5 feet in diameter, were dug by ground sloths. There Are Huge Tunnels in South America Dug By Extinct Giant Sloths. Little was known about the sloth-dug tunnels before this point and since their initial discovery, Frank and his team of researchers have found more than 1,500 tunnels in Rio Grande do Sul area alone. The sloth remains included a 27,000-year-old tooth, arm bone, and leg bone. They weighed more than an adult elephant. Crews digging a tunnel for a new Los Angeles train line have found the remains of an ancient giant sloth. The one competing source of tunneling was likely another Ice Age giant, the Holmesina armadillo. And why bother? For the first time in thousands of years, sacred Mayan underwater tunnels in Mexico's Yucatan are being rediscovered, say researchers from Mexico's National Anthropology and History Institute (INAH). Now scientists have concluded that an ancient species of giant sloth excavated the tunnels.