Cretaceous multituberculate skeleton and the early evolution of the mammalian shoulder girdle

A different forelimb posture than other Cretaceous eucosmodonts was observed in a cretaceous eucosmodont multituberculate mammal skeleton with a well- conserved shoulder girdle found in Mongolia. Locomotion change seen in the skeletal structure had occurred in multituberculates and therians in the mid Jurassic period. Other postural and mobility characteristics of the specimen are similar to that of therians.