Morganucodon was only 10 cm (4 in) long. But a close relative of this tiny creature was the first mammal on Earth. Its DNA was passed on to billions of descendants—including you.
Rights: This image was obtained from the Smithsonian Institution. The image or its contents may be protected by international copyright laws. http://www.si.edu/termsofuse
Scientific Name: <i>Morganucodon Oehleri</i>
Photo Credit: John Steiner, Smithsonian Institution
National Museum of Natural History
Field: Paleobiology
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