Lemuria

Lemuria, or Limuria, is a hypothetical sunken continent in the Indian Ocean that was proposed in 1864 by zoologist Philip Sclater to account for the distribution of lemur fossils on Madagascar and the Indian subcontinent but not in continental Africa or the Middle East. Biologist Ernst Haeckel expanded the idea in 1870, proposing it as the ancestral home of humans. The theory was discredited with... (Wikipedia)