Elasmosaurus

Elasmosaurus platyurus

Elasmosaurus was a powerful marine reptile that swam the ancient seas using flippers and a streamlined body.

Habitat: Mesozoic oceans and coastal waters

Appearance

The Elasmosaurus has an incredibly long neck, a tiny head, and a large, sleek body with four powerful paddle-like flippers. Its back might have been dark blue-grey, fading to a lighter underside for camouflage in ancient seas.

KingdomAnimalia

Elasmosaurus

Interesting facts

Early scientists once put its head on the wrong end of its body!

Elasmosaurus swam the same oceans as fierce mosasaurs and sharks.

Its neck had over 70 bones, more than any other known animal!

This massive marine reptile could grow longer than a school bus!

Special abilities

Elasmosaurus can snatch fast-moving prey from below with its super-long neck, darting its head quickly through the water.

Elasmosaurus uses four strong, paddle-like flippers to 'fly' gracefully through the water, like a sea turtle.

Its small, streamlined head allows Elasmosaurus to dart into schools of fish without startling the whole group.

Measurements & details

Estimated Length: 10-14 m
Estimated Weight: 1500-2000 kg
Era: Cretaceous Period
Extinct Millions Years Ago: 66

Diet & Feeding

This ancient marine reptile hunted fish, squid, and other small sea creatures with its long neck.

Primary Foods

Fish
Ammonites
Squid
Bony fish

Foraging Method

Ambush

Ecological connections

hunts

Sabretooth Herring

Enchodus ferox

A primary prey fish for Elasmosaurus.

eats

Straight Ammonite

Baculites ovatus

A common cephalopod prey in its ancient ocean habitat.

eaten by

Tylosaurus

Tylosaurus proriger

Juvenile Elasmosaurus were likely prey for large mosasaurs.

eaten by

Crow Shark

Squalicorax pristodontus

Sharks may have preyed on young or injured Elasmosaurus.

Traits

Webbed Feet

These animals have special feet with skin between their toes, which helps them swim super fast!

Ancient

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Armored

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Crystalline

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Fossil

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