''Pseudotribos'' ("false chewing") is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of

mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...

that lived in Northern

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

during the

Middle Jurassic The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from about 174.1 to 163.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relatively rare, but geological formations co ...

some , possibly more closely related to

monotreme Monotremes () are prototherian mammals of the order Monotremata. They are one of the three groups of living mammals, along with placentals (Eutheria), and marsupials (Metatheria). Monotremes are typified by structural differences in their brain ...

s than to theria ( placental and marsupial mammals), although other studies indicate that these shuotheres are closer to therians than to monotremes. The only known specimen was found in the

Daohugou Bed The Haifanggou Formation (), also known as the Jiulongshan Formation (), is a fossil-bearing rock deposit located near Daohugou () village of Ningcheng County, in Inner Mongolia, northeastern China. The formation consists of coarse conglomerates ...

in Inner Mongolia (: paleocoordinates ).. Retrieved May 2013.

References

External links

''Pseudotribos robustus'', ancient Jurassic mammal with new type of teeth
Prehistoric mammal genera Jurassic mammals of Asia Fossil taxa described in 2007 Taxa named by Zhe-Xi Luo Taxa named by Qiang Ji (paleontologist) Taxa named by Chong-Xi Yuan {{jurassic-mammal-stub