History Exhuming the First American Mastodon, 1806 painting by Charles Willson Peale. A Dutch tenant farmer found the first recorded remnant of Mammut, a tooth some 2.2 kg (5 lb) in weight, in the village of Claverack, New York, in 1705.The mystery animal became known as the "incognitum". In 1739 French soldiers at present-day Big Bone Lick State Park, Kentucky, found the first bones to be The largest extant theropod is the common ostrich, up to 2.74 metres (9 ft 0 in) tall and weighs between 63.5 and 145.15 kilograms (140.0 and 320.0 lb). [34] The smallest non-avialan theropod known from adult specimens may be Anchiornis huxleyi , at 110 grams (3.9 ounces) in weight and 34 centimetres (13 in) in length, [35] although later study Blue whales are the largest animals ever known to have lived on Earth. These magnificent marine mammals rule the oceans at up to 100 feet long and upwards of 200 tons. Their tongues alone can Some sauropods, such as Patagotitan, stretched for 37 meters and weighed in at 57 tons. It lived during the Early Cretaceous period, around 101 million years ago, and is potentially the longest dinosaur ever. It is just one of a group known as the titanosaurs, which includes the largest of the sauropods. The hundreds of specimens obtained from the La Brea Tar Pits in Los Angeles constitute the largest collection of Smilodon fossils. S. gracilis was the smallest species at 55 to 100 kg (120 to 220 lb) in weight. in length indicates this individual may have weighed as much as 436 kg (961 lb). It stood at a shoulder height of 120 Megatherium americanum was one of the largest animals in its habitat, weighing up to 3.8-4.58 t (8,400-10,100 lb), with a shoulder height of 2.1 m (6 ft 11 in) and length of 6 m (20 ft) from head to tail. It was one of the largest ground sloths, about as big as modern Asian elephants. . 210 294 195 158 224 341 33 481

how much did the biggest dinosaur weigh