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2.6-Million-Year-Old Paranthropus Jaw Found in Ethiopia’s Afar Extends Genus’ Range by 1,000 Kilometers

The Nature study argues the fossil reveals a versatile lineage present in northeastern Africa during a poorly sampled late Pliocene interval.

Overview

  • Researchers led by Zeresenay Alemseged describe MLP-3000 from Mille-Logya, a partial lower jaw with tooth roots and a molar crown analyzed with micro-CT.
  • Magnetostratigraphy places the fossil between about 2.9 and 2.5 million years ago, making it roughly 2.6 million years old and among the earliest Paranthropus remains.
  • The find is the first Paranthropus documented in the Afar and expands the genus’ known northern range by more than 1,000 kilometers beyond previous records.
  • The mandible shows hallmark robust-chewing features alongside more primitive traits, prompting a conservative assignment to Paranthropus sp. rather than a specific species.
  • Its presence in the Afar indicates local Late Pliocene coexistence with early Homo and Australopithecus and supports the view that prior absence reflected sampling gaps.