Original: Luo et al. (2003) inferred from the foot structure of Sinodelphys that it was a scansorial tree-dweller, like its non-marsupial contemporary Eomaia and modern opossums such as Didelphis.
Simplified: From its foot structure it is thought that Sinodelphys was a tree-dweller, like its non-marsupial contemporary Eomaia and modern opossums such as Didelphis.