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<p>Book digitized by Google and uploaded to the Internet Archive by user tpb.
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<br>Subjects: fishes; osseous; author; silurian; upper; geological; ancient; lower; cranial; geologic; red sandstone; cranial buckler; development hypothesis; sir roderick; lower silurian; osseous fishes; upper ludlow; hyoid plate; upper surface; cerebral development</div>
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Hugh Miller</div>
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