Weusuallyseeancientplantsorinsectsinamber(琥珀).Butrecent...
問題詳情：Weusuallyseeancientplantsorinsectsinamber(琥珀).Butrecently,agroupofresearchersfoundsomethingunusualinamber—afeatheredtail!Thetailincludesbones,softtissueandevenfeathers.Itis37mmlong,whichisa...