What feature is common among the H. erectus fossils discovered at Gran Dolina?

The H. erectus fossils discovered at Gran Dolina exhibit features that are commonly associated with adaptations to varying environmental conditions and dietary needs. The sculpture of their facial structure, particularly the wider noses, is indicative of a species adapted to different climates, potentially facilitating better airflow and moisture retention in colder or drier environments. This anatomical trait, alongside their overall robust physical characteristics, is significant as it reflects evolutionary changes that likely aided in survival and adaptation to their surroundings.

These traits also align with the known characteristics of H. erectus, which show a blend of primitive and more advanced hominin features that suggest an evolutionary milestone. The robust nature of these fossils represents both a physical adaptability and perhaps a shift towards a more complex lifestyle, possibly involving foraging and dietary versatility.

Other options may present interesting aspects of human evolution, but they do not specifically highlight the defining physical traits found in the Gran Dolina specimens, making the choice regarding wider noses and increased robustness the most accurate reflection of this particular fossil discovery.