A new, mysterious duck-billed dinosaur known as Aquilarhinus palimentus was discovered in Texas by shocking paleontologists.
Famous for its aquiline nose and broad jaw, Aquilarhinus palimentus was discovered in the Big Bend National Park in the 1980s, but it was not until the 1990s that researchers found a domed nasal ridge that was previously thought to be that it belongs to another dinosaur. There was also found the strange lower jaw, which has "the shape of two side by side trowels". Paleontologists recently analyzed the skull and found that it was more primitive than Gryposaurus and the two main groups of dinosaur beaked dinosaurs.
"This new animal is one of the more primitive known Hadrosaurids and can therefore help us to understand how and why the ornaments on their heads evolved, as well as the origin and origin of the group," said lead author of the study, Dr , Albert Prieto-Márquez from Institut Català de Paleontologia Miquel Crusafont, in a statement.
MYSTERIOUS NEW LIZARD FOUND INSIDE 125 MILLION-YEAR-FLYING DINOSAUR
"Its existence adds further evidence to the growing hypothesis that is still in the air that the group began in the southeastern area of the U, "added Prieto-Márquez.
"The recognition of this lineage contributes to the diversity of non-saurolophic hadrosaurs and points to the existence of a hitherto unknown variety of duck-billed dinosaurs outside of the saurolophines, lambeosaurine radiation," the abstract states of the study.
Hadrosaurids were the most common herbivores towards the end of the Mesozoic and all had similar-looking snouts. However, Aquilarhinus, with its broad pines that met "in a peculiar W-shape", was significantly different from other Hadrosaurids of the time, which met in a U-shape to harvest plants.
It is likely that Aquilarhinus would have shoveled through loose sediment to collect loosely-rooted aquatic plants in today's Chihuahuan Desert.
"Skull combs were ancestors of the early Hadrosaurids and evolved prior to Saurolophid Irradiation," the abstract added. "Ancestrally were combs & # 39; and consisted of arched nostrils that were stored under the Kritosaurinen and then modified into the various comb morphologies that were observed among the derived saurolophins."
The Mesozoic was divided into the Triassic (251-199.6 million years ago), the Jurassic (before 199.6-145.5 million years ago) and the Cretaceous (145.5-65.5 million years ago ), according to the University of California at Berkeley. The Mesozoic had mass extinctions at the beginning and at the end, including the asteroid that crashed into the Yucatan Peninsula in Mexico. The study was published in the Journal of Systematic Paleontology Get the Fox News App