Comparative studies suggest that Dongbeititan is a basal titanosauriform, more derived than Euhelopus, Fusuisaurus, and Huanghetitan, but less derived than Gobititan and Jiutaisaurus. Dongbeititan represents the first sauropod dinosaur reportedfrom the Lower Cretaceous Jehol Group of western Liaoning Province.
Based on the morphological data and on the physical and chemical analyses of coprolites, it is interpreted that it had omnivorous feeding habits. The shape and abrasion pattern of the incisiform teeth suggest that Mariliasuchus employed the prominent anterior incisiform teeth for an active digging behavior.
As expected, monotremes exhibit the lowest body temperatures, but within marsupials diprotodonts have a mean body temperature higher than several placental groups; the traditional ranking of body temperatures in the sequence monotremes - marsupials - placentals is thus misleading.