Parasaurolophus Argentinii

Parasaurolophus Argentinii is an extinct species of Hadrosaur part of the extinct genus, Parasaurolophus. It was discovered in 1921 in Argentina, where fossils of Giganotocarnotaurus, Gigantohetrus, Cerasaurus, Iguanodonts, and other species were discovered, making it the only known Hadrosaur of South America. Just like the modern day eastern duckbill and southern duckbill as well as other extinct Parasaurolophus species, it is believed that it may have had several functions: visual display for identifying species and sex, sound amplification for communication, and thermoregulation. Like all known Parasaurolophus species and like most Hadrosaurs, with the exception of Carnovorosaurus, it was a herbivore that mainly fed on ferns, cycads, leaves, and horsetails, but unlike most other Hadrosaur species of its time, it fed on grass, which first appeared in the Middle Cretaceous but was not very abundant during that time nor at the end of the Cretaceous period, but being a primitive browser and grazer meant that this species of Hadrosaur was one of the dominant herbivore of Late Cretaceous Argentina from 77 million years ago to 66 million years ago. Sadly, unlike Parasaurolophus Titanii, this species didn't make it through the mass extinction possibly due to the fact that this species wasn't as adapted to feed on grass as Parasaurolophus Titannii.