2021-04-08

Scientists newly discovered “earth-digging” dinosaurs in armor

By yqqlm yqqlm

Science and Technology Daily, Beijing, April 7th (Reporter Zhang Mengran) According to a paleontological study recently published in the journal Science Reports under Natural Science Research, the newly excavated skeletal remains of an Ankylosaurus revealed that ankylosaurus dinosaurs may Once mastered the skill of digging. This dinosaur specimen is called MPC-D 100/1359, which may improve our understanding of animal behavior in the Late Cretaceous Period (84 million to 72 million years ago).

It is known that Ankylosaurus was a large armored herbivore that lived in the Cretaceous Period, and a variety of Ankylosaurus formed a unique group in the big family of dinosaurs. Ankylosaurus appeared relatively late on the stage of dinosaur history. At the end of the Cretaceous, its most prominent feature was “armor”—the upper part of the body was covered with thick scales, most of which had two rows of spines on the back and one on the top of the head. Diagonal, and a tail like a golf club. The four legs and neck of Ankylosaurus are relatively short, and the head is broad.

Scientists newly discovered “earth-digging” dinosaurs in armor

This time, Seoul University, Korea The team unearthed skeletal remains from a formation of the “Baruungoyot” group discovered in the South Gobi Desert of Mongolia in the 1970s and labeled MPC-D 100/1359. According to the analysis of the research team, the multiple anatomical features of MPC-D 100/1359 indicate that this may be an ankylosaurus, and it has been adapted to excavation-the forefoot bones of this ankylosaurus are arranged in a shallow arc. It is proof that it can be used to dig soft soil.

Compared with other dinosaurs, this ankylosaurus has multiple vertebrae and fewer hindfoot bones. These features may help MPC-D 100/1359 dig soil or swing its tail. body. In addition, the MPC-D 100/1359 is wide in the middle and narrow in the front and back, which may enable its body to stay straight when digging.

The research team speculates that MPC-D 100/1359 may have obtained edible water, minerals or roots by digging soil, and may even curl up in some shallow pits to protect its soft lower body from predation Attack. Due to some of these characteristics, similar anatomical features have been reported in other Ankylosaurus, so the above findings indicate that the ability to dig soil may also be common in other Ankylosaurus dinosaurs.