 Occurring in marginal-lacustrine or outrightly terrestrial settings, it bears longer limb bones, a straighter femur and a deeper pelvis than other phytosaurs.Combined with its unusually deep upper jaw and heterodont teeth, it was most likely a secondarily terrestrial predator, probably not at all dissimilar from terrestrial crocodilymorphs like sebecians.Nicrosaurus dentition is highly heterodont, the tooth shapes varying from wide, laterally compressed blade teeth to cylindrical, recurved caniniform teeth.