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The sharklike Helicoprion lived 275 million years atrás and could slice its prey in two with its buzz saw jaw.
video
national geographic
documentary
fossils
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Source: national geographic
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Source: national geographic
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Source: nationalgeographicdaily.tumblr.com
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added by lilyZ
Source: national geographic
added by lilyZ
added by lilyZ
Source: national geographic
added by lilyZ
Source: national geographic
added by lilyZ
added by lilyZ
added by lilyZ
added by lilyZ
added by lilyZ
added by lilyZ
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added by lilyZ
added by -lostgirl-