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A team of researchers affiliated with institutions in Argentina and the U.K. has found evidence of a dinosaur that walked on all fours when it was young and then switched to walking on two legs as it grew to adulthood. In their paper published in the journal Scientific Reports, the group describes their study of Mussaurus patagonicus, an early sauropod species that lived in what is now Argentina, and what they learned about it.
Prior research had found evidence of Mussaurus patagonicus ("Patagonian mouse lizard") living in what is now Patagonia, Argentina. Like other sauropod species, it had a long neck and tail, walked upright, and weighed approximately one metric ton. It was also known to be quite small after hatching—small enough to fit in the modern human hand. This piqued the interest of the researchers, who wondered if it might have walked on all fours in its early stages of growth.
M - Patagonicus - Development - Researchers - Sample
To learn more about M. patagonicus development, the researchers obtained and studied sample bone fossils from three periods during the life of the dinosaur:...
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