Final answer:
The remains recovered from the Sima de Los Huesos belong predominantly to Homo heidelbergensis, which displayed early evidence of potential burial rituals, indicating complex social behaviors among archaic human species.
Step-by-step explanation:
The species of human recovered from the Sima de los Huesos in Spain are mostly associated with Homo heidelbergensis, although some have features that are Neanderthal-like. Scientists have discovered remains of about 28 individuals and some of the remains are peculiar because of the scattering patterns, which suggest the possibility of funerary practices or deliberate burials—a behavior thought to be unique to later humans and not associated with archaic hominins. Furthermore, evidence from nuclear DNA indicates early hominins at this site were related to Neanderthals, marking an important divergence in human evolutionary history. The remains are dated to approximately 430,000 years ago, providing substantial information about early human species and their social behaviors, including potential burial rituals.