The ‘unusually well-preserved’ five yard-long tail was the first ever found in Mexico. It is 72 million years old

The tail, found near the small town of General Cepeda found in the border state of Coahuila, likely made up half the dinosaur’s length, Aguilar said.

Archaeologists found the 50 vertebrae of the tail completely intact after spending 20 days in the desert slowly lifting a sedimentary rock covering the creature’s bones.

Strewn around the tail were other fossilised bones, including one of the dinosaur’s hips, INAH said.

Precision: Archaeologists painstakingly excavate the tail

Speaker for the ᴅᴇᴀᴅ: The tail, from a hadrosaur, will enable experts to learn about bone conditions that affected the colossal beasts

Despite Mexico’s rich heritage in paleontology, this is the first dinosaur tail found in the country

Strewn around the tail were other fossilised bones, including one of the dinosaur’s hips

Dinosaur tail finds are relatively rare, according to INAH.

The new discovery could further understanding of the hadrosaur family and aid research on diseases that afflicted dinosaur bones, which resembled those of humans, Aguilar said.

Scientists have already determined that dinosaurs suffered from tumors and arthritis, for example.

Dinosaur remains have been found in many parts of the state of Coahuila, in addition to Mexico’s other northern desert states.

‘We have a very rich history of paleontology,’ Aguilar said.

He noted that during the Cretaceous period, which ended about 65 million years ago, much of what is now central northern Mexico was on the coast.

This has enabled researchers to unearth remains of both marine and land-based dinosaurs.

The presence of the remains was reported to INAH by locals in June 2012. After initial inspections, excavation began earlier this month. The remains of the tail will be transferred to General Cepeda for cleaning and further investigation.

An artist rendering provided by the National Geographic Society shows what a hadrosaur is believed to have looked like. Most dinosaur groups, except hadrosaurs and ceratopsians, were in decline for the last 40 million years of the Cretaceous