in new paper Published in the magazine on January 31, 2024 historical biologypaleontologists announced the discovery of a previously undocumented species of dinosaur related to the famous dinosaur. stegosaurus.
stegosaurus A group of armored, plant-eating dinosaurs that lived during the Jurassic and Cretaceous periods.
These dinosaurs were four-legged and reached a maximum length of about 9 meters (30 feet).
They had small heads, stake-like teeth, vertical bony plates and spines on their backs and tails, and hoof-like toes on all four limbs.
Dr. Lei Jia of the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, and colleagues said, “Stegosaurs are a minor but iconic group of ornithischian dinosaurs.''
“They range from the Middle Jurassic to the Early Cretaceous, but are rare and poorly represented in the Cretaceous.”
“Until our study began, there were only four valid taxa from the Cretaceous. Palantdon, Verhosaurus homheni, Verhosaurus ordoseensis and Mongolostegus exspectabilis”
Fossilized bones are Enbokuryu Artimus. Image credit: Jia other., doi: 10.1080/08912963.2024.2308214.
A new species from the Cretaceous period, Enbokuryu Artimuslived in what is now China from 113 million years ago to 100 million years ago.
The fossilized remains of this sword dragon were collected from the Zuoyun Formation in Zuoyun County, Shanxi Province, China.
“Enbokuryu Artimus “This is one of the most recent records of a stegosaur taxon in the world,” the paleontologists said.
“Compared to other sword dragons, Enbokuryu Artimus The dorsal vertebrae and iliosacral block have several unique features. ”
“The dorsal vertebrae have higher neural arches, smaller neural canals, and fewer fused vertebrae/sacral and fenestra/sacral ribs in the iliosacral block.”
“As a result of phylogenetic analysis, Enbokuryu Artimus It is recovered as a sister taxon of the clade containing. Stegosaurus Stenops and Vuelhosaurus homheni” they added.
“However, it differs from these two taxa in several anatomical features, including the dorsal sacral ribs, sacral ribs, caudal vertebrae, and ilium.”
_____
Ray Jia other. A new species of sword dragon from the Late Early Cretaceous period of Zuoyun City, Shanxi Province, China. historical biology, published online on January 31, 2024. doi: 10.1080/08912963.2024.2308214
Source: www.sci.news
