| peaceful interdependence | 0.47 |
| group | 0.40 |
| herd | 0.39 |
| the jurassic period | 0.38 |
| north america | 0.37 |
| the mesozoic era | 0.35 |
| alaska | 0.34 |
| environment | 0.34 |
| swamp | 0.27 |
| texas | 0.27 |
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| become extinct | 0.82 |
| roam the earth | 0.74 |
| walk the earth | 0.62 |
| lay egg | 0.61 |
| live on earth | 0.61 |
| live on land | 0.58 |
| live with man | 0.58 |
| rule the earth | 0.57 |
| come to life | 0.56 |
| live millions of years | 0.55 |
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| feather | 0.64 |
| small heads | 0.52 |
| scale | 0.50 |
| skull | 0.45 |
| arm | 0.45 |
| brain | 0.45 |
| four limbs | 0.45 |
| lung | 0.43 |
| tail | 0.43 |
| pelvic girdle | 0.41 |
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| animal | 0.58 |
| varied group of animals | 0.54 |
| land animals | 0.52 |
| archosaur | 0.41 |
| social animals | 0.31 |
| extinct species of anim… | 0.27 |
| dominant terrestrial ve… | 0.27 |
| among animal | 0.25 |
| vertebrate animals | 0.25 |
| original molds | 0.35 |
| a piece of dinosaur dna | 0.27 |
| created | 0.64 |
| related | 0.61 |
| discovered | 0.60 |
| divided into two major … | 0.55 |
| known to science | 0.53 |
| studied | 0.52 |
| feathered | 0.52 |
| covered in feather | 0.51 |
| described | 0.50 |
| resurrected | 0.49 |
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