Mastodon vs Mammoth: What's the Difference?

Mastodons and mammoths are often confused with each other. They were both prehistoric elephant relatives, both went extinct around 11,000 years ago, and both have been found as fossils across North America (including Florida). But they were different species with different habits, diets, body shapes, and lifestyles. This guide explains what made them different and how to tell them apart, drawn from research by the Florida Museum of Natural History and broader paleontology.

The short answer#

Mastodons and mammoths look similar at first glance — both elephant-relatives with tusks and trunks. The differences:

• Mammoths are more closely related to modern elephants
• Mastodons are more distantly related (different family entirely)
• Mammoths ate grass; mastodons ate leaves and branches
• Mammoths lived in cooler open environments; mastodons lived in forests
• Mammoths had flat grinding teeth (like elephants); mastodons had conical teeth (like cones)

Both lived in North America (and worldwide) during the Ice Age, both went extinct around 11,000 years ago, and both are well-preserved in Florida's fossil record.

Side-by-side comparison#

	Mastodon	Mammoth
Scientific family	Mammutidae	Elephantidae
Relationship to modern elephants	Distant cousin	Closer cousin (same family)
Diet	Browser (leaves, twigs, branches)	Grazer (grass)
Tooth shape	Conical (cone-shaped)	Flat with ridges (grinding teeth)
Habitat	Forests, wooded areas	Cooler open plains
Body shape	Stockier, lower-bodied	Taller, more elephant-like
Tusks	Smaller, straighter	Larger, more curved
Hair/fur	Some hair, less than mammoths	Often thick fur (especially woolly mammoth)
Where in Florida	Found across the state	Found, but rarer
Extinction	~11,000 years ago	~11,000 years ago (woolly), ~4,000 years ago (some)

What were mastodons like?#

Mastodons lived for about 27 million years before going extinct, spread across North America and parts of Asia and Europe. They were forest-dwellers, browsing on leaves, twigs, branches, and tree bark.

Body#

About 9-10 feet tall at the shoulder, weighing 4-6 tons. Stockier and lower-bodied than modern elephants. Long flat back without the dramatic forehead arch of modern elephants.

Teeth#

The defining feature. Mastodon teeth were cone-shaped — perfect for crushing tough plant material like branches, bark, and pine needles. The word "mastodon" actually means "breast-tooth" because the cone shape reminded early scientists of breasts.

Tusks#

Smaller and straighter than mammoth tusks. Adult male mastodons had tusks 6-10 feet long. Some mastodons had small lower tusks too.

Diet#

Browsers. Mastodons ate:

• Conifers and pine needles
• Hardwood branches and bark
• Twigs and stems
• Some leaves
• Fruits when available

The diet matches their forest habitat.

Behavior#

Probably social, living in family groups led by older females (like modern elephants). They moved seasonally to find food. Some specimens show evidence of male-male combat (broken tusks, healed injuries).

What were mammoths like?#

Mammoths were more closely related to modern elephants. The most famous species — the woolly mammoth — lived during the Ice Age in cooler climates.

Body#

Taller than mastodons. Adult woolly mammoths were 9-11 feet tall at the shoulder, weighing 6-8 tons. The body had the elephant-like forehead arch. Other mammoth species varied — Columbian mammoths (which lived in warmer climates including Florida) were even larger.

Teeth#

Flat grinding teeth with ridges, perfect for tough grasses. The teeth replaced themselves repeatedly throughout a mammoth's life (similar to modern elephants).

Tusks#

Long, curved, often dramatic. Adult male woolly mammoths had tusks up to 16 feet long that curved upward and forward. Female tusks were shorter.

Diet#

Grazers. Mammoths ate:

• Tough grasses
• Sedges
• Small woody plants
• Some shrubs

The grass-based diet required the flat grinding teeth.

Fur#

Woolly mammoths had thick fur. Long outer hairs over insulating undercoat. Adapted for cold Ice Age climates.

Where they lived#

Both lived across North America during the Pleistocene (the Ice Age), but in different ecosystems.

Mastodons#

Forested areas across what is now the United States and Canada. Especially common in eastern North America (including Florida). Forest cover meant trees to browse on.

Mammoths#

Cooler open environments. Columbian mammoths lived across the southern United States including Florida. Woolly mammoths lived in cooler northern areas and Siberia. Both species ranged into Mexico.

Mastodons and mammoths in Florida#

Florida is one of the best states for finding both species' fossils. The state's Late Pleistocene rock formations preserve excellent specimens of both.

Florida mastodon sites#

• Page-Ladson site (Aucilla River, Jefferson County) — mastodon remains with butcher marks dated to 14,500 years ago. One of the oldest sites of human-megafauna interaction in the Americas.
• Various Pleistocene sinkholes in central and north Florida have produced complete mastodon skeletons.

Florida mammoth sites#

• Pleistocene river deposits across central and north Florida have produced Columbian mammoth fossils.
• Peace River (DeSoto and Hardee Counties) — divers and kayakers find mammoth and mastodon bones alongside the famous megalodon teeth.

The local picture: see our Florida's prehistoric past for more.

Extinction#

Both went extinct around the same time — about 11,000 years ago, during the end of the last Ice Age. The causes are debated but probably include:

Climate change#

The end of the Ice Age changed habitats. Forests shifted, grasslands expanded or contracted, and species adapted to specific environments suffered.

Human hunting#

Humans had arrived in North America by 14,000+ years ago. Both species were hunted for food, hide, and tusks. The Page-Ladson site shows direct evidence of mastodon butchery 14,500 years ago.

Combined pressure#

Most paleontologists think both climate change and human hunting contributed. Neither alone would have caused the extinction; combined they pushed both species over the edge.

Some isolated mammoth populations on islands (Wrangel Island, north of Russia) survived until about 4,000 years ago.

Connection to modern elephants#

Modern elephants (African and Asian) are the closest surviving relatives of mammoths. Modern elephants share more features with mammoths than with mastodons:

• Body shape (forehead arch, taller proportions)
• Tooth structure (flat grinding teeth)
• Diet (mostly grass and leaves)

Mastodons branched off the elephant family tree much earlier, so they're more distantly related to modern elephants. If you imagine the elephant family tree, modern elephants and mammoths are siblings; mastodons are cousins from a different branch.

At a Jurassic Petting Zoo event#

Mastodons and mammoths are not part of our mobile experience (we focus on the Mesozoic dinosaurs). For schools running Ice Age units or Florida prehistoric history units, the Master Fossil Exhibition can be themed to include Pleistocene material if requested in advance.

Frequently asked questions#

Were mammoths and mastodons dinosaurs?#

No. Both were mammals — specifically, prehistoric elephant relatives. They lived long after the dinosaurs went extinct, during the Ice Age (Pleistocene Epoch).

When did mammoths and mastodons live in Florida?#

Both lived in Florida during the Late Pleistocene — roughly from about 100,000 years ago to their extinction 11,000 years ago. Some isolated mammoth populations elsewhere survived longer.

Were woolly mammoths in Florida?#

Probably not in significant numbers. Florida's climate was too warm for the cold-adapted woolly mammoth. Columbian mammoths (their warmer-climate cousins) lived in Florida.

Could scientists clone a mammoth?#

The technology is being explored. Frozen mammoth specimens preserved in Siberian permafrost contain DNA. Several research groups are working on cloning. The technology is not yet at the point of producing live mammoths.

Can I find mastodon fossils in Florida?#

Yes, with permits. Some Florida rivers (Peace River, Aucilla River) allow fossil collection with state permits. Mastodon bones are valuable finds that are often donated to museums for research.

Where can I see a mammoth or mastodon skeleton?#

The Florida Museum of Natural History in Gainesville has significant Pleistocene mammal collections. The Smithsonian, the American Museum of Natural History, and the Royal Ontario Museum (Toronto) all have notable specimens.

Bring prehistory to life#

For South Florida schools and families exploring the Ice Age and Florida's specific prehistoric history, our school events include the Master Fossil Exhibition which can incorporate Pleistocene material on request. Check date availability.