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The first archaic Homo from Taiwan.

Chun-Hsiang Chang1, Yousuke Kaifu2, Masanaru Takai3

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A new archaic Homo mandible (Penghu 1) from Taiwan reveals late-surviving primitive traits in Pleistocene Asia. This discovery suggests multiple hominin lineages coexisted before modern humans arrived.

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Area of Science:

  • Paleoanthropology
  • Human Evolution
  • Pleistocene Asia

Background:

  • Increasing hominin fossil discoveries reveal regional and chronological diversity of archaic Homo in Pleistocene eastern Asia.
  • Current understanding is limited by sparse fossil evidence from key geographical areas like Indonesia, China, and the Russian Altai.
  • The evolutionary relationships and diversity of hominins in this region remain incompletely understood.

Purpose of the Study:

  • To describe a newly discovered archaic Homo mandible from Taiwan, named Penghu 1.
  • To analyze the morphological characteristics and chronological placement of the Penghu 1 fossil.
  • To assess the implications of this discovery for understanding hominin diversity and evolution in Pleistocene Asia.

Main Methods:

  • Description and analysis of the dentognathic morphology of the Penghu 1 mandible.
  • Dating of the fossil to determine its survival timeframe.
  • Comparison of Penghu 1's morphology and age with known Pleistocene hominin fossils from Asia.

Main Results:

  • The Penghu 1 mandible exhibits robust and primitive dentognathic morphology.
  • The fossil represents an unexpectedly late survival, dated between 190,000 and 10,000 years ago.
  • This morphology is unique among penecontemporaneous Asian hominin fossils, except for the mid-Middle Pleistocene Homo from Hexian.

Conclusions:

  • The Penghu 1 fossil significantly increases the known diversity of Pleistocene Asian hominins.
  • The unique trait distribution challenges simple explanations based on clinal variation of Homo erectus.
  • The findings suggest the survival of multiple, distinct archaic hominin evolutionary lineages in Asia prior to the arrival of Homo sapiens.