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The 8 Oldest Animal Species on Earth

By Steven Romano Nov 21, 2013

9 of 9

Nautilus

Resembling the extinct ammonites of yore—despite being somewhat distant—the nautilus is the only cephalopod in existence to occupy the Nautiloidea subclass. They were once a common sight in the oceans and seas of the Paleozoic Era, but now the nautilus is the sole living representative of this group. Regrettably, they're threatened by unscrupulous profiteers that sell nautilus shells to collectors.

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.