At: Transactions of the Geological Society of Pennsylvania, 1, 2 By: Harlan R.
journalAt: Proceedings of the Royal Society of London, 20, 136 By: Williamson W.
journalAt: Quarterly Journal of the Geological Society of London, Part 1, 25, 99 By: Baily W. H.
journalAt: Proceedings of the Philosophical Society of Glasgow, 1, 6 By: Gourlie W.
journalAt: Bulletin de la Société Botanique de France, 34, 4 By: Boulay J. N.
journalAt: Bulletin de la Société Botanique de France, 34, 5 By: Boulay J. N.
journalAt: Mémoires de la Société du Muséum d’Histoire Naturelle de Strasbourg, 2, 3[Article 2] By: Voltz P.-L.
journalAt: Annales des Sciences Naturelles, 15 By: Brongniart A. T.
bookAt: Anim. Foss. Géol Attique, Paris, F. Savy, 17-18 By: de Saporta G.
journalAt: Bulletin de la Société Géologique de France, Ser. 2, 23 By: de Saporta G.