Asterotrygon
... that a small fetus is preserved in the holotype fossil of the extinct stingray Asterotrygon?
... that a small fetus is preserved in the <a href="./Holotype" id="mwCWc" rel="mw:WikiLink" title="Holotype">holotype</a> fossil of the extinct stingray <i id="mwCWg"><b id="mwCWk"><a href="./Asterotrygon" id="mwCWo" rel="mw:WikiLink" title="Asterotrygon">Asterotrygon</a></b></i>?