Astrohippus
... that, being a descendant of Pliohippus, Astrohippus is not considered to be an ancestor to modern horses?
... that, being a descendant of <i id="mwA3M"><a href="./Pliohippus" id="mwA3Q" rel="mw:WikiLink" title="Pliohippus">Pliohippus</a></i>, <i id="mwA3U"><b id="mwA3Y"><a href="./Astrohippus" id="mwA3c" rel="mw:WikiLink" title="Astrohippus">Astrohippus</a></b></i> is not considered to be an ancestor to modern <a href="./Horse" id="mwA3g" rel="mw:WikiLink" title="Horse">horses</a>?