Hublin and his team also attempted to obtain DNA samples from these fossils, but these attempts were unsuccessful. Genomic analysis would have provided necessary evidence supporting the conclusion that these fossils are representative of the main lineage leading up to modern humanity, and that "Homo sapiens" had dispersed and developed all across Africa. Because of the unclear boundaries between different species of the genus "Homo", and the lack of genomic evidence from these fossils, some doubt the classification of these fossils as "Homo sapiens". Questions remain over the classification of these fossils.