Primapus
- 首足鸟（首足鸟是已灭绝的雨燕目，生存于5000万年前的英国。化石在伦敦黏土层发现，模式种为"P. lacki"）
Primapus
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abstract:
Primapus is an extinct genus of apodiform bird from the Early Eocene of the United Kingdom. Its fossils were found in the London Clay, which was deposited around 50 million years ago.
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WordNet