| 单词 | pteranodon | 
| 释义 | pteranodonnoun  pter·an·o·don  tə-ˈra-nə-ˌdän    : any of a genus (Pteranodon) of Cretaceous pterosaurs having a backwardly directed bony crest on the skull and a wingspan of about 25 feet (7.7 meters)   | 
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