Question

What claim did Thorne from Mungo Lady and Mungo Man make? What evidence supported his claim?

Answer 1

Alan Thorne (an Australian physical anthropologist) argued that the Lake Mungo skeletons supported a multiregional/continuity view of human evolution for Australia. In short, he claimed that Aboriginal Australians were descended locally from archaic Pleistocene populations in Australia (long-term regional continuity) rather than being entirely recent immigrants who replaced earlier people in a single “Out-of-Africa” dispersal.

Evidence Thorne used to support that claim
- Morphology of the skeletons: he pointed to relatively “robust” cranial and facial features of Mungo Man (and other Pleistocene Australian fossils) that he judged to be archaic and distinct from recent European/African skull shapes.
- Metric and trait comparisons: multivariate analyses of cranial and dental measurements that, in Thorne’s interpretation, showed continuity between Pleistocene Australian remains and later Aboriginal skulls rather than a sudden replacement by anatomically modern humans from elsewhere.
- Chronology and context: the great antiquity of the Lake Mungo burials (tens of thousands of years) implied a long local presence in Australia, consistent with continuity.
- Patterning across Australian fossils: Thorne argued similar traits recur in other ancient Australian finds, supporting a regional lineage.

Context/what later work showed
- Thorne’s morphological interpretation was controversial. Early mtDNA and later genomic studies have largely supported a single recent African origin for all modern humans, with subsequent regional isolation and some archaic admixture (e.g., Denisovan) rather than wholesale long-term in‑situ evolution of modern humans in Australia. Ancient DNA from Lake Mungo has been difficult and contested, and modern genetic work tends to contradict the strong multiregional claim while still recognizing very deep, long-standing Aboriginal genetic isolation and uniqueness.