Few modifications are observed in the transition of the uksip luliformes to the uksip marfinnus. In this generation, the creature grew more and developed a stronger muscular structure, with strong arms to grasp things. Its ivory became bigger, and now it can break hard materials that the marfinnus finds in its way. These creatures have a life expectancy dependent on its activities. Once its tooth is worn out due to drawn out use, it hinders how the animal feeds and defends, leading to the animal's death. For this reason, it reaches sexual maturity in only a few years, and thus it can guarantee the perpetuation of the species.