Tinguiririca fauna
...that though no fossil grasses have been discovered, the earliest-known grassland ecosystem, the 30+ million-year-old Tinguiririca fauna of Chile, can be detected through the grazers' teeth?
...that though no fossil grasses have been discovered, the earliest-known <a href="./Grassland" id="mwDH8" rel="mw:WikiLink" title="Grassland">grassland ecosystem</a>, the 30+ million-year-old <b id="mwDIA"><a href="./Tinguiririca_fauna" id="mwDIE" rel="mw:WikiLink" title="Tinguiririca fauna">Tinguiririca fauna</a></b> of <a href="./Chile" id="mwDII" rel="mw:WikiLink" title="Chile">Chile</a>, can be detected through the grazers' <a class="mw-redirect" href="./Teeth" id="mwDIM" rel="mw:WikiLink" title="Teeth">teeth</a>?