Madagascar Was Never Attached to Africa—It Rifted Away

Madagascar has never been connected to mainland Africa in its current form. It is a continental fragment that separated during the breakup of Gondwana.

Plate Tectonic History

1. ~160–130 Ma: Madagascar + India + Seychelles + Antarctica + Australia rifted from Africa (East African Rift precursor).
2. ~88 Ma: Madagascar separated from India (Seychelles microcontinent stayed with India initially).
3. ~65 Ma: India raced north; Madagascar drifted to its current position ~400 km off Mozambique.

Key Evidence:

• Endemic biota: 90%+ species unique (lemurs, fossas, chameleons, baobabs) — evolved in isolation.
• Geology: Precambrian basement rocks match India/Sri Lanka, not Africa.
• No land bridge fossils: No African megafauna (elephants, lions, antelopes) in Malagasy fossil record.

Misconception Source: Proximity (Mozambique Channel = 400 km) + "Africa's island" phrasing. But it's a microcontinent, not a continental shelf island like Zanzibar or Sri Lanka.

Madagascar's isolation is why it's a biodiversity hotspot unlike any other—a living laboratory of evolution.