A plant-eating sauropod that lumbered around what’s now China some 162 million years ago had a neck that was about 10 feet longer than a typical school bus
— and the longest of any known dinosaur. The creature’s 49.5-foot-long neck would have allowed it to stand in one spot and hoover up the surrounding vegetation — maximizing the amount of food it consumed while conserving energy. The fossilized remains of the dinosaur, called Mamenchisaurus sinocanadorum, were discovered in 1987 in China’s northwestern region of Xinjiang and first described in a 1993 scientific paper.
” The longest complete neck documented by scientists belongs to a fossilized dinosaur called Xinjiangtitan, Moore said, and that was about 5 feet shorter than the neck of M. sinocanadorum. Hollow bones lighten the load The study also revealed intriguing details about these massive dinosaurs. Similar to a bird’s lightweight skeleton, M. sinocanadorum’s bones were filled with air, rather than marrow, which is a characteristic of most mammal bones.
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