After discovering remains of a giant animal in Maraghe, northwest of Iran, experts at Tabriz University have started unearthing its bones, though they yet have no idea what kind of animal it used to be, Iranian Cultural Heritage News Agency reported on Tuesday.

Maraghe is one of the fossil-rich areas around the globe, already yielding several dinosaurs’ remain, some of which used to live during the third geological period. One could find some of these fossils in museums worldwide.

The latest discovery has, however, remained mysterious since paleontologists have not been able to identify it, “while many fossils are yet to be unearthed,” said Dr. Zainolabedin Abrishami, paleontology professor at Tabriz University.

Some experts had made wild guesses about the species of the animal, saying it belonged to a mammoth. Dr. Abrishami, nevertheless, refuted these speculations, suggesting, “It is impossible to recognize it without jigsawing different bones together, though we could say they possibly belong to the late 3rd or early 4th geological periods.”

These fossils are discovered in a historical site as vast as 1,000 sq m, on the way between Mardagh and Kurdjaabad.