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Prehistoric Mammals

Saber Tooth Squirrel

Cronopio Dentiacutus (Saber Tooth Squirrel) Quick Facts: Lived in late cretaceous period (145 million to 66 million years ago) 4-6 inches long Had long canine teeth Lived...

Morganucodon

Quick Morganucodon Facts: - Lived during the Late Triassic Period - Lived in what is now Asia, Europe and North America - Weighed as much as a "AA" battery - Could run as fast as a mouse - Was an insectivore

Megazostrodon

Quick Megazostrodon Facts: - Lived from the Late Triassic Period through the Early Jurassic Period - Lived in what is now Africa - Weighed as much as a "AA" battery - Was an insectivore and/or herbivore - Could probably run as fast as a mouse

Repenomamus

Quick Repenomamus Facts: - Lived from the Late Cretaceous Period - Lived in what is now Asia - Was the length of an armadillo - Weighed more than 2 gallons of paint - Was a carnivore

Purgatorius

Quick Purgatorius Facts: - Lived from the Late Cretaceous Period - Lived in what is now North America - Was smaller than a squirrel - Lived in trees - Was an omnivore

Dinofelis

Quick Dinofelis Facts: - Lived from the Pliocene Period through the Pleistocene - Lived in Asia, Africa, Europe and North America - Was about the size of a panther - Lept on prey from trees - Was a carnivore - May have hunted hominids

Smilodon

Quick Smilodon Facts: - Lived from the Early Pleistocene Period through the Modern Period - Lived in North America and South America - Was smaller than a modern lion - Ambushed prey from tree branches - Was a carnivore

Proailurus

Quick Proailurus Facts: - Lived from the Late Oligocene Period through the Early Miocene Period - Lived in Eurasia - Was a little larger than a modern cat - Weighed as much as a Dachshund dog - Was a carnivore

Machairodus

Quick Machairodus Facts: - Lived from the Late Miocene Period through the Modern Period - Lived in Africa, Eurasia and North America - About the size of a modern lion - Was a carnivore - Couldn't run quickly

Homotherium

Quick Homotherium Facts: - Lived from the Pliocene Period through the Modern Period - Lived in what is now North America, South America, Africa and Eurasia - About as long as a black panther - Was a carnivore - May have gone extinct due to human hunting, increased competition and climate change - Was adapted to high altitudes

Megantereon

Quick Megantereon Facts: - Lived from the Late Oligocene Period through the Pleistocene Period - Lived in Africa, North America and Eurasia - Was half the size of a North American mountain lion - Was a carnivore - May have hunted hominids

Rodhocetus

Quick Rodhocetus Facts: - Lived during the Early Eocene Period. - Lived of the coast of central Asia - Was about as long as a dolphin - Weighed more than a horse - Was a carnivore - Lived on a diet of fish and squids

Dorudon

Quick Dorudon Facts: - Lived during the Late Eocene Period. - Lived all around the world - 3 times longer than a Chinese alligator - Twice as heavy as an American alligator - Ate fish, smaller sharks and mollusks

Pakicetus

Quick Pakicetus Facts: - Lived during the Early Eocene Period. - Lived around the shores of what is now India and Pakistan - About the size of dog - Lived entirely on land - Ate Fish

Ambulocetus

Quick Ambulocetus Facts: - Lived during the Early Eocene Period. - Lived around the shores of what is now India - About the size of an American alligator - Could live on land or in water - Was a carnivore

Basilosaurus

Quick Basilosaurus Facts: - Lived during the Late Eocene Period. - Fossils were made into furniture in the Southeastern U.S. - Had a bite 5 times more powerful than a Gray Wolves - Was longer than a semi-trailer - Weighed as much as a ship's anchor - Was a carnivore

Leviathan (Livyatan)

Quick Leviathan Facts: - Lived during the Miocene Period - Was longer than a semi-trailer - Weighed as much as 6 elephants - Had sharp teeth that were almost as long as a bowling pin - Was probably as fast as a blue whale - Was a carnivore - Lived on a diet of small whales, dolphins and prehistoric seals

Megaladapis

Quick Megaladapis Facts: - Lived from the Pleistocene Period through the Modern Period - Lived in Madagascar - Looks a lot like a sloth - Was shorter than a refrigerator - Weighed as much as an octopus - May have been the origin of the Big Foot legend

Australopithecus

Quick Australopithecus Facts: - Lived from the Late Pliocene Period throught the Early Pleistocene Period - Lived in what is now Africa - About as tall as a modern 9-year old human - Weighed half as much as a toilet - May have been omnivorous

Gigantopithecus

Quick Gigantopithecus Facts: - Lived from the Miocene Period through the Pleistocene Period - Lived in what is now Asia - Almost twice the height of a refrigerator - Weighed more than a horse - Was an herbivore - May have lived off bamboo - May have been as strong as 20 men

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