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<dl><dd>'Extract from the Proceedings of the Academy of Natural Sciences of Philadelphia, March, 1858' - t.p</dd>
<dd>This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England</dd>
<dd>The Royal College of Surgeons of England</dd></dl><br>Subjects: Vertebrates, anatomy &amp; histology; Fossils</div>
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<dl><dd>Leidy, Joseph, 1823-1891</dd>
<dd>Royal College of Surgeons of England</dd></dl></div>
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