A Cynopterus brachyotis
Song, Arnold. 2008. Photograph. n.p. Web. 6 Sep 2012. <http://today.brown.edu/articles/2008/11/bat-flight>.
Question Mark, Polygonia interragationis
Location: 42.3668, -71.3031
Bat wings and butterfly wings are analogous structures because though they are presently used for the same function of flying, they originated from different ancestral sources.
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