At: Annals of the Natal Museum, 22, 2 By: Lacey W. S., van Dijk D. E., Gordon-Gray K. D.
bookAt: Sci. Res. Norw. N. Polar Exp. 1893-1896, Christiania, Jacob Dybwad, 1, Art. 3 By: Nathorst A. G.
journalAt: Transactions of the Royal Society of Edinburgh, 53(3), 27 By: Scott A. C.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 1 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 2 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 3 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 4 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 5 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 6 By: Crookall R.
journalAt: Memoirs of the Geological Survey of Great Britain, Series, Palaeontology, 4, 7 By: Crookall R.