Final answer:
The fossils from Dmanisi and Kocabas are unique because they provide insight into the migration, evolution, and social behavior of early Homo species, including the possibility of deliberate deposition of the dead and evidence of meat processing and social cooperation.
Step-by-step explanation:
What is unique about the fossils from Dmanisi and Kocabas, as revealed in various researches and discoveries, is that they exhibit remarkable features and contexts that shed light on the behavior and capabilities of early Homo species. The Dmanisi fossils are significant because they provide evidence for one of the earliest known instances of Homo outside Africa, with diverse morphological features that have led to an understanding of migration and evolution. The Kocabas fossils, on the other hand, represent a different early Homo species that has unique characteristics distinguishing it from other finds.
Notably, the Gran Dolina findings, including 200 stone tools and abundant processed animal bones, imply early human meat processing and social cooperation. Similarly, the Capitan Formation in the Glass Mountains provides extremely well-preserved fossils, easily recoverable using acid, showcasing the diversity in fossilization processes. The discoveries concerning Homo naledi suggest that early Homo species participated in complex social behaviors, potentially including deliberate deposition of the dead, challenging prior assumptions about the development of such practices.
What connects these findings is their contribution to understanding the extinct Homo species' behavior, technology, and evolution, presenting new insights into the lives of our ancient ancestors. The debate over whether such behaviors indicate funerary practices, as seen in the case of H. naledi, or natural occurrences like that of cave-dwelling baboons, underscores the complexity of interpreting ancient remains.