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Moroccan Hominin Fossils Dated to 773,000 Years Bolster African Roots of the Homo Sapiens Lineage

High‑resolution paleomagnetism ties the Thomas Quarry I remains to the MatuyamaBrunhes reversal, placing an evolved Homo erectus–like population in North Africa at the genetic window for the lineage split.

Overview

  • An international team reports three mandibles, teeth, vertebrae and other fragments from Casablanca’s Grotte à Hominidés, published in Nature and presented in Rabat.
  • The fossils were securely dated to about 773,000 years with ~4,000‑year precision by anchoring the sediment layer to the MatuyamaBrunhes magnetic reversal.
  • Anatomy shows a mosaic of archaic and derived traits, leading authors to place the group within an evolved Homo erectus sensu lato without naming a new species.
  • The find fills a long-standing gap in Africa’s mid‑Pleistocene record that overlaps estimates for the last common ancestor of Homo sapiens, Neanderthals and Denisovans.
  • Taphonomy indicates a carnivore den context with hyena bite marks on a femur, and comparisons with Atapuerca’s Homo antecessor prompt calls for further regional analyses.