At: Annals of Botany, 26, 104 By: Scott D. H.
journalAt: Annals of Botany, 44, 175 By: Maslen A.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 132, 5-6 By: Trivedi B. S., Verma C. L.
journalAt: Memoirs of the Queensland Museum, 32, 1 By: Rozefelds A. C. F.
journalAt: Torreya, 26, 1 By: Cockerell T. D. A.
journalAt: American Museum Novitates, 62 By: Cockerell T. D. A.
journalAt: Journal of botany, British and Foreign, 67, 2 By: Nikitin P. A.
bookAt: Micropalaeont. Oceans, Cambridge, University Press By: Black M.
journalAt: Publications of the Carnegie Institution of Washington, 553 By: Condit C.
bookAt: Taconic Syst., Albany, Carrol & Cook, Printers By: Emmons E.