Disambiguation evidence for Olduvai Gorge via surface form

"Olduvai normal subchron"

Triples (1)

Triples where some other subject referred to this entity as "Olduvai normal subchron".

Gauss–Matuyama geomagnetic reversal → precedes →
"Olduvai normal subchron"
↳ resolves to Olduvai Gorge
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