Black mastiff bat (Molossus rufus) embryos, light micrograph. As the embryo develops (from left to right) its fingers grow longer and the membrane bet

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Black mastiff bat (Molossus rufus) embryos, light micrograph. As the embryo develops (from left to right) its fingers grow longer and the membrane between them expands to form the wing. The external ear also extends to form a hood over the head.

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Size: 4095px × 2138px
Photo credit: © DORIT HOCKMAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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