Kinhulo Mongolinsis. Image Credit: Julius Sosotoni/University of Calgary
Eutyrannosuria, the most excellent of the meat -dinosaur Tirenosis Rex, During the latest cratesis, Asian and North America dominated the animals. During his most evolutionary history, tirenosorides were small physical animals, which only reached large sizes during the last 20 million years of the Critisis period.
Between 1972 and 1973, two partial tirenosoride skeleton were recovered from the lower uppercare reserves of the Sheriah Formation in Mongolia through the Mongolian peltologist Altanyer Perl. The remains were assigned Electrosurus OlsiniA secret pattern of tirenosoride described before China. Further analysis of these samples identified them as a new species of medium -sized tirenosoride, providing insights to the origin and evolution of uterinosuria.
Skeletal elements and anatomy K. Mongolinsis. Word et al.
New Tyranosoride, which name is Shankholo mongolinsisAbout 86 million years ago, I wandered in Mongolia. Its estimated physical length was 4 meters (13 feet) and weighs 750kg (1,650 pounds). Although bone histology cannot be used to evaluate the skeletal maturity of the samples, multiple eastological properties suggest that both samples represent adults.
Holotype (MPC-D 100/50) is an affiliated skeleton that contains fuse nasal, partial left lockrimal, partial left and right quadrarate, wumor, left and right actopride juggling process, partial left and right paragid, and partially defeated post cranial post cranial. The common name is derived from the Latin of the Mongolian word khankhu (Prince) and Lou (dragon). The specific name identifies the country in which samples were found.
Tyranosoridia Time Calibered Foology. Wrors et al.
Features that have features Shankholo mongolinsis Add a shallow, rugs midline ridge to the nasal bone, which is mostly spreading with the Walled region, and a small pneumatic lease on the back end of the lacarmal bone. Different from the new species Electrosore It lacks hypertension at the planter distal articular level in the metataral III.
The new study indicates that three dispersed events occurred during the origin and evolution of uterinosuria. The spread of tirenosus began about 90 million years ago when a species of the same Sons Crossed from Asia to North America. About 79 79 and 78 million years ago, at least one of the tirenosuses returned to Asia. This movement gave rise to two separate Asian tirennosaur tissues: one small and thin body, one larger and stock. One of the major bodies Asian tirenosor was dispersed in North America about 70 million years ago, resulting in the evolution of T -Crele. This analysis supports the results of previous studies in which evidence of the Asian origin of Tea Raxes has been discovered.
References:
Worver, JT, Zilnetsky, DK, Kobiyashi, Wi, Moodysto, SP, Three, F, Sosomomomy, H, Chennurig, T, and Swing Batter, K (2025). The evolution of a new Mongolian tirenosoride and uterinosuria. Nature. https://doi.org/10.1038/s41586-025-08964-6
Dalman, SG, etc. A major tirenosor of the evolution of the Campaign and Tyranosord Gaganitzam in South North America. Representative 1422124 (2024).
Nosnovas, F, FL agnolón, MD Ezcurra, J. Porfiri, and G Canal. 2013. Evolution of meat -eating dinosaurs during Cretesis: Evidence from Patagonia. Cretesees Research 45: 174-215.
