William Thompson (naturalist)
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Academy of Natural Sciences of Drexel University
Signe Wilkinson
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Tim Flannery
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Samuel George Morton
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Ruth Patrick
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Canyon Diablo (meteorite)
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Fairmount, Philadelphia
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American lion
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William Parker Foulke
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Benjamin Waterhouse Hawkins
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Torosaurus
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Titian Peale
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Carolina wren
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Penn Museum
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George Ord
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James Bond (ornithologist)
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National Sea Grant College Program
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Dire wolf
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John Bell Hatcher
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John Cleves Symmes Jr.
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Deal, New Jersey
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Ellesmere Island
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Robert Peary
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Philadelphia
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John James Audubon
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Drexel University
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Philadelphia Academy of Natural Sciences
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