Today just three species of elephant survive — but they are the last twigs on a vast, 60-million-year family tree. Their ancestors began as rabbit-sized swamp-dwellers in North Africa and radiated into some of the largest land mammals that ever lived: shovel-tuskers, four-tuskers, woolly mammoths and elephants twice the weight of any alive today. Here’s the full story of how the elephant evolved, and the extinct relatives it left behind.
The short answer: elephants belong to the order Proboscidea, which arose in Africa around 60 million years ago. The earliest known member, Eritherium, was a rabbit-sized animal with no trunk. Over time the group evolved trunks and tusks and spread worldwide as mastodons, mammoths and true elephants — but only Loxodonta (African) and Elephas (Asian) survive today.
The Elephant Family Tree: What Is Proboscidea?
All elephants, living and extinct, belong to the mammalian order Proboscidea — named for the proboscis, or trunk. It’s an ancient African lineage, and while it once contained dozens of genera across every continent except Australia and Antarctica, today it holds just one family (Elephantidae) and three living species. Surprisingly, an elephant’s closest living relatives aren’t other big animals but the small hyrax and the aquatic manatee and dugong — more on that in how elephants are classified.
A Timeline of Elephant Evolution
The broad arc, from the first proboscidean to the modern elephant:
| When | Ancestor | What it was like |
|---|---|---|
| ~60 million years ago | Eritherium | Earliest known proboscidean. Rabbit-sized (~3–6 kg), no trunk, tiny tusks — found in Morocco. |
| ~37–35 mya | Moeritherium | Tapir/pig-sized and likely semi-aquatic, grazing swamp plants in Egypt. A side branch, not a direct ancestor. |
| ~37–27 mya | Phiomia & Palaeomastodon | First proboscideans with short trunks and true tusks — the base of the elephant line. |
| ~18–19 mya | (dispersal) | Africa collides with Eurasia; proboscideans spread out of Africa and radiate worldwide. |
| ~10 mya | Early Elephantidae | The family that contains mammoths and modern elephants first appears, in Africa. |
One striking detail: Eritherium’s ~60-million-year age forced scientists to rewrite the story — it showed the group arose almost immediately after the dinosaurs died out, tens of millions of years earlier than some genetic estimates had predicted.
Mastodons vs. Mammoths: Clearing Up the Confusion
These two Ice Age giants are constantly mixed up, but they’re different animals. Mastodons (family Mammutidae) branched off early, were forest browsers, and had blunt, cone-shaped molars for crushing twigs and leaves. Mammoths (genus Mammuthus) are far closer to modern elephants — in fact the woolly mammoth is more closely related to the living Asian elephant than the Asian elephant is to the African — and had ridged, grass-grinding molars like today’s elephants. For a full head-to-head, see our guide to elephants compared to mammoths.
The woolly mammoth was more closely related to today’s Asian elephant than the Asian elephant is to the African elephant.
The Giants and the Dwarfs
Proboscidean evolution produced extremes at both ends. On the giant side, the straight-tusked Palaeoloxodon namadicus of Ice Age Asia may have been the largest land mammal that ever lived — possibly exceeding 20 tonnes, dwarfing any elephant alive today (see the biggest elephants in the world). The Columbian and woolly mammoths were comparable in scale to large modern elephants, while the fantastical Platybelodon and its kin — the “shovel-tuskers” — had flattened, spade-like lower tusks for scooping vegetation.
At the other extreme, elephants stranded on Mediterranean islands shrank dramatically through “insular dwarfism.” Palaeoloxodon falconeri of Sicily and Malta stood barely a metre tall — a full-grown elephant the size of a large dog. Their small skulls, with a single central nasal opening, may even have helped inspire the ancient Greek myth of the one-eyed Cyclops.
How Modern Elephants Fit In
The three survivors — the African bush elephant (Loxodonta africana), African forest elephant (Loxodonta cyclotis) and Asian elephant (Elephas maximus) — are the last of a once far larger cast. See how they differ in the three species of elephant and African vs Asian elephants. The African species and the Asian species last shared a common ancestor several million years ago — genuinely distinct branches, not regional varieties.
Could Extinct Elephants Return? The Mammoth “De-Extinction” Project
The most extinct proboscidean might not stay extinct. The biotech company Colossal Biosciences has an active, well-funded project to engineer cold-adapted, mammoth-like elephants by editing woolly mammoth genes into the Asian elephant genome, aiming for a first calf later this decade. Whether that counts as truly “bringing back” the mammoth — or simply creating a hairy, cold-tolerant Asian elephant — is a genuine scientific and ethical debate. Either way, it’s a remarkable coda to a 60-million-year story.
The bottom line
From a rabbit-sized, trunkless ancestor 60 million years ago to 20-tonne giants and dog-sized island dwarfs, the elephant family was once one of the most successful and diverse on Earth. Only three species remain — which is exactly why their conservation matters so much. Keep exploring: the three living species, elephants vs mammoths, and how elephants are classified.
Frequently asked questions
Elephants evolved from early members of the order Proboscidea that arose in Africa around 60 million years ago. The earliest known, Eritherium, was a rabbit-sized animal with no trunk and only tiny tusks; trunks and large tusks evolved later.
The oldest known proboscidean is Eritherium azzouzorum, described in 2009 from ~60-million-year-old fossils in Morocco. It weighed only a few kilograms — roughly rabbit-sized — and looked nothing like a modern elephant.
Mastodons were early-branching forest browsers with blunt, cone-shaped molars. Mammoths are much closer relatives of modern elephants, with ridged grass-grinding teeth — the woolly mammoth is actually more closely related to the living Asian elephant than to the African elephant.
The straight-tusked Palaeoloxodon namadicus of Ice Age Asia may have been the largest land mammal ever, possibly over 20 tonnes — far heavier than any elephant alive today.
Not other large animals, but the small hyrax and the aquatic manatee and dugong. All belong to an ancient African group of mammals called Paenungulata.
A company called Colossal Biosciences is trying — by editing mammoth genes into Asian elephant DNA to create cold-adapted, mammoth-like elephants. Whether that truly revives the mammoth or just makes a hairy Asian elephant is debated, but the project is real and active.
