Hueber, Francis M.
(1982)
A plant microfossil assemblage comprising seven species of megaspores; <i>Verrutriletes carbunculus</i> (Dijkstra) Potonié, <i>Echitriletes</i> cf. <i>E. lanatus</i> (Dijkstra) Potonié, <i>Erlansonisporites erlansonii</i> ...