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The 8 Oldest Animal Species on Earth

By Steven Romano Nov 21, 2013

8 of 9

Steve Jurvetson/Wikimedia Commons

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Triops

Triops—also known as “tadpole shrimp”—are a genus of miniature crustaceans that have been around for 300 million years. There’s differing species of Triops, varying in size and color, but the one trait seen in all of them is their eggs undergoing a form of suspended animation when faced with adverse conditions. Called “diapause,” the eggs won’t hatch until in contact with an adequate water supply. Similar to Sea Monkeys, Triops hatching kits are available in all major toys stores. Now go forth and nurture your own prehistoric abomination!

Tags: animals, science, jellyfish, slideshows, lizards, earth

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About the Author
Steven Romano

Like Captain America, Steven Romano is just a boy from Brooklyn. When he isn't contributing to The MindHut and other geeky websites, Steven's hard at work writing his first novel and comic book scripts. Follow him on Twitter @Steven_Romano, and swing by his blog: stevenromano.tumblr.com

Wanna contact a writer or editor? Email contribute@sparknotes.com.