Paleontologists in Brazil comprise unveiled a brand new species of unenlagiine dromaeosaurid dinosaur from the Maastrichtian age of the Cretaceous length.
An artist’s reconstruction of two contributors of Ypupiara lopai foraging in an alluvial river, the atmosphere of the Marilia Formation for the length of the Maastrichtian age of the Cretaceous length. Image credit: Guilherme Gehr.
The new dinosaur species walked the Earth between 72 and 66 million years ago (Slack Cretaceous epoch).
Named Ypupiara lopai, it used to be a vogue of unenlagiine, a subfamily of feathered theropod dinosaurs in the family Dromaeosauridae.
“Dromaeosauridae are contemporary in all continents for the length of the Mesozoic Era,” acknowledged Arthur Brum from the Museu Nacional-Universidade Federal save Rio de Janeiro and his colleagues from Brazil.
“In Gondwanan landmasses, the Unenlagiinae lineage constitutes a diversification of dromaeosaurids, comprising 5 species recovered from Argentinean localities.”
“These dromaeosaurids are identified by a quantity of enamel, which lack denticles and each carinae, and which comprise longitudinal grooves on the crown.”
“Amongst all unenlagiines, best two species — Buitreraptor gonzalezorum and Austroraptor cabazai — comprise cranial aspects, including maxillary and dentary enamel, which limits the peep of dental traits in the neighborhood.”
“The presence of Unenlagiinae specimens in Brazil is proscribed to a single dorsal vertebra from the Campanian-Maastrichtian sequences of the Adamantina Formation.”
The specimen of Ypupiara lopai used to be recovered at Peiropolis, a rural district of Uberaba municipality, in the Brazilian sigh of Mina Gerais.
“Our peep items the principle proof of unenlagiines in the Maastrichtian Marilia Formation (Bauru Neighborhood, Brazil) and the 2nd confirmed proof of this clade in Brazil (as successfully because the principle cranial remains referred to the Bauru Neighborhood in the country),” the paleontologists acknowledged.
The specimen they examined contains a partial better jaw bone with associated enamel and a portion of a decrease jaw.
“Ypupiara lopai offers new data on the evolution of Gondwanan dromaeosaurids, and its preserved enamel present new data to allow the assignment of isolated dromaeosaurid enamel from the Bauru Neighborhood,” they acknowledged.
The discovery is reported in a paper published in the journal Papers in Palaeontology.
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Arthur S. Brum et al. A New Unenlagiine (Theropoda, Dromaeosauridae) from the Upper Cretaceous of Brazil. Papers in Palaeontology, published online August 5, 2021; doi: 10.1002/spp2.1375
