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'''Stegomastodon''' ('roof nipple tooth') is an extinct genus of proboscid.
It stood 2.70 m (9 ft) tall and looked like a robust version of the modern elephant. It weighed about 13,200 lbs, or 6000 kg. Unlike most of its relatives, it had just two tusks, like modern elephants. These tusks curved upwards and were about 11 feet long, or 3.5 meters. ''Stegomastodon's molars were covered in enamel and had a complex pattern of ridges and knobbly protrusions on them, giving the creature a large chewing surface enabling it to eat grass. It lived in North and South America, and its brain weighed about 11 lbs.