Multimedia Gallery
April 20, 2016
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A strolling tiger salamander, used to study how early vertebrates learned to walk.
Studying the tiger salamander can help us understand the movements of the first tetrapods, four-limbed vertebrates whose descendants include mammals.
Credit: Sandy Kawano and Rick Blob, National Institute for Mathematical and Biological Synthesis
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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