At: Report of the United States Geological Survey of the Territories, 1883, 8 By: Lesquereux L. C.
journalAt: Palaeontographica, 31, 3-4 By: Hosius A., von der Marck W.
journalAt: Canadian Record of Science, 1, 3 By: Bain F., Dawson J. W.
journalAt: Zeitschrift der Deutschen Geologischen Gesellschaft, 36, 4 By: Vater H.
journalAt: Revue des sciences naturelles, Series 3, 4 By: Rérolle L.
journalAt: Comptes rendus hebdomadaires des séances de l’Académie des Sciences, Paris, 99, 19 By: Marion A.-F.
journalAt: Quarterly Journal of the Geological Society of London, Part I, 40, 4=160 By: Hinde G. J.
journalAt: Mittheilungen aus dem Osterlande, Neue Folge, 2 By: Engelhardt H.
bookAt: Ocherk Estestv. Klassif. Rast., Saint-Petersburg, Izdanie L.N. Zhukovskoj By: Kirpotenko A. P.
journalAt: Second Geological Survey of Pennsylvania Report of Progress, 1884, P, 3 By: Lesquereux L. C.