The National Geographic Magazine, Volume 194National Geographic Society., 1998 - Geography |
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Page 43
... species . Compounding the identity problem , most frogfish can change color over periods ranging from a few days to a few minutes . University of Washington zoologist Theodore W. Pietsch spent 15 years study- ing frogfish specimens ...
... species . Compounding the identity problem , most frogfish can change color over periods ranging from a few days to a few minutes . University of Washington zoologist Theodore W. Pietsch spent 15 years study- ing frogfish specimens ...
Page 96
... species of theropods , including Velociraptor , unearthed in Mongolia in 1991. Its two clavicle bones are joined to make a V - shaped furcula ( below ) . A few scientists reject the dinosaur - bird connection . They see the similarities ...
... species of theropods , including Velociraptor , unearthed in Mongolia in 1991. Its two clavicle bones are joined to make a V - shaped furcula ( below ) . A few scientists reject the dinosaur - bird connection . They see the similarities ...
Page 92
... species may also have had relatively long arms and short legs . Old bones tell a new story Australopithecus ... species between apes and humans - walked upright on two legs , the first hallmark of the human family . Scientists have ...
... species may also have had relatively long arms and short legs . Old bones tell a new story Australopithecus ... species between apes and humans - walked upright on two legs , the first hallmark of the human family . Scientists have ...
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