![Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- \](http://www.ecns.cn/hd/2018/07/10/21864f4873b1471b810c7bf4e8acd0c0.jpg)
Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- "Ingenia prima" -- from the Balde de Leyes formation, near Marayes, San Juan province, Argentina. Giant dinosaurs lived on Earth much earlier than previously thought, according to a team of excavators in San Juan, who discovered the remains of a 200-million-year old species. (Photo/Agencies)
![Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- \](http://www.ecns.cn/hd/2018/07/10/08349c2d7d6649eb93d374cba4e4b512.jpg)
Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- "Ingenia prima" -- from the Balde de Leyes formation, near Marayes, San Juan province, Argentina. Giant dinosaurs lived on Earth much earlier than previously thought, according to a team of excavators in San Juan, who discovered the remains of a 200-million-year old species. (Photo/Agencies)
![Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- \](http://www.ecns.cn/hd/2018/07/10/d299417b1f4a4e91bd059a66375cea3c.jpg)
Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- "Ingenia prima" -- from the Balde de Leyes formation, near Marayes, San Juan province, Argentina. Giant dinosaurs lived on Earth much earlier than previously thought, according to a team of excavators in San Juan, who discovered the remains of a 200-million-year old species. (Photo/Agencies)
![Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- \](http://www.ecns.cn/hd/2018/07/10/2c77bed4d06942c5ab124ff29eb5d6e8.jpg)
Photo released on July 9, 2018 shows an investigator works on the extraction of the remains of a giant dinosaur -- "Ingenia prima" -- from the Balde de Leyes formation, near Marayes, San Juan province, Argentina. Giant dinosaurs lived on Earth much earlier than previously thought, according to a team of excavators in San Juan, who discovered the remains of a 200-million-year old species. (Photo/Agencies)