At: Journal of Geology, 2, 2 By: Ward L. F.
bookAt: Cup. Cone Bethella, Drumheller, Aulie Ink By: Aulenback K. R.
journalAt: Palaeontographica, Abtheilung, B, Paläophytologie, 115, 1-3 By: Pant D. D., Verma B. K.
journalAt: Lethaia, 9, 3 By: Copper P.
journalAt: Publications of the Carnegie Institution of Washington, 553 By: Chaney R. W.
journalAt: Bulletin of the Geological Society of Denmark, 1978, 27 By: Friis E. M.
journalAt: Journal of the Palaeontological Society of India, 3 By: Herak M.
journalAt: Publications of the Carnegie Institution of Washington, 476 By: Chaney R. W.
journalAt: Micropaleontology, 12, 3 By: Peck R. E., Morales G. A.
journalAt: Palynology, 37, 2 By: Rooney A., Clayton G., Goodhue R.