| Term 
 | Definition 
 
        | A layer of material; naturally or artificially formed |  | 
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        | Term 
 | Definition 
 
        | Any of the modern or extinct bipedal primates |  | 
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        | Term 
 | Definition 
 
        | the science of the forms of life existing in former geologicperiods, as represented by their fossils. |  | 
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        | Term 
 | Definition 
 
        | The study of the human species, using fossils and other remains. |  | 
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        | Term 
 | Definition 
 
        | Science that deals with the dynamics and physical history of the earth. |  | 
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        | Term 
 | Definition 
 
        | A small valley or ravine originally worn away by running water. |  | 
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        | Term 
 | Definition 
 
        | Relating directly to the matter at hand |  | 
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