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773,000-Year-Old Moroccan Fossils Recast the Early Family Tree of Modern Humans

A Nature analysis positions North African hominins close to the ancestral split of later human lineages.

Overview

  • High-resolution magnetostratigraphy, including a geomagnetic reversal, dates jaws, vertebrae and teeth from Thomas Quarry I to about 773,000 years.
  • CT and anatomical comparisons reveal erectus-like mandibles paired with molars resembling early Homo sapiens and Neanderthals.
  • The research team interprets the remains as not Homo antecessor but likely descendants of a locally evolved African Homo erectus.
  • The results bolster a deep African origin for Homo sapiens and indicate the divergence from Eurasian sister lineages started earlier than often proposed.
  • Shared traits with Spanish fossils revive the possibility of Early Pleistocene population exchanges across the Strait of Gibraltar.