By BONNIE F. JACOBS AND ELLEN CURRANO
None of us has ever experienced a site like this. Not only are the  shales full of leaf fossils, but we have now also found beautiful and  important fossil bones, including the tooth of a small mammal and the  scapula of an artiodactyl. (This is an order of hoofed animals that are  also known as even-toed ungulates — picture a mammal that walks on its  tippy-toes, like a gazelle.)
These discoveries mean there is great potential for finding other  mammals here, including primates. This site will fill a gap in the  record of African vertebrate evolution — there are no others of this age  known.
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