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Std 20
Stegosaurus had a distinctive double row of plates on its back and tail. ...
32 artículos Std 20
Std 36
The head of the male Parasaurolophus had a long, curved, hollow crest that was used for...
32 artículos Std 36
Std 48
The jaw bones are connected by flexible ligaments, allowing the...
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Std 48
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Std 4
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Std 10
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Std 72
Like other canids, the black-backed jackal has a hierarchy within its group...
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Std 48
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