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New species of duck-billed dinosaurs discovered in Mexico | Paleontology

By on May 31, 2021 0

Paleontologists have identified a new species of hadrosaur lambeosaurin from fossils found in northern Mexico.

Reconstruction of the life of Tlatolophus galorum. Image credit: Marco A. Pineda.

The new dinosaur roamed our planet during the Campanian period of the late Cretaceous, 72 to 73 million years ago.

It belongs to Parasaurolophini, a tribe of hadrosaurs with elaborate bony head ridges in the subfamily Lambeosaurinae.

Scientifically named Tlatolophus galorum, it was between 8 and 12 m (26 to 39 feet) long.

Its hollow bony ridge was about 1.3 m (4.3 feet) long and was probably red in color.

“We know that Tlatolophus galorum had ears capable of receiving low frequency sounds, so they must have been peaceful but talkative dinosaurs, ”said Dr Ángel Ramírez-Velasco, paleontologist at the Instituto de Geología de Universidad Nacional Autónoma de México.

“Some paleontologists believe they made loud sounds to scare carnivores or for breeding purposes, suggesting that their crest may have been brightly colored.”

Paleontologists with the fossilized tail of Tlatolophus galorum.  Image credit: Ramírez-Velasco et al., Doi: 10.1016 / j.cretres.2021.104884.

Paleontologists with the fossilized tail of Tlatolophus galorum. Image credit: Ramírez-Velasco et al., doi: 10.1016 / j.cretres.2021.104884.

The fossilized remains of Tlatolophus galorum were recovered in the 2000s in the Cerro del Pueblo formation near Presa de San Antonio, Coahuila, Mexico.

Currently, it is the most complete lambeosaurin hadrosaur found to date in this country.

“This fossil, still under study, is an exceptional case in Mexican paleontology, because very favorable events must have occurred millions of years ago, when Coahuila was a tropical region, for it to be preserved in the conditions in which we find it, ”said Dr. Felisa Aguilar, paleontologist at Centro INAH Coahuila.

The teams paper was published online in the journal Cretaceous research.

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Ángel A. Ramírez-Velasco et al. Tlatolophus galorum, gen. and sp. nov., an Upper Campanian parasaurolophini dinosaur from the Cerro del Pueblo formation, Coahuila, northern Mexico. Cretaceous research, published online May 11, 2021; doi: 10.1016 / j.cretres.2021.104884

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