occurred somewhere in the area between the Ob River and the Irtysh River, following an earlier split between Proto-Uralic and Proto-Yukaghir somewhere in Eastern Siberia. See also Indo-Uralic languages Ural–Altaic languages Uralo-Siberian languages Borean languages Notes Bibliography Works cited Bomhard, Allan R. 2008. Reconstructing Proto-Nostratic: Comparative Phonology, Morphology, and Vocabulary, 2 volumes. Leiden: Brill. Greenberg, Joseph H. 2000. Indo-European and Its Closest Relatives: The Eurasiatic Language Family, Volume 1: Grammar. Stanford, California: Stanford University Press. Greenberg, Joseph H. 2002. Indo-European and Its Closest Relatives: The Eurasiatic Language Family, Volume 2: Lexicon. Stanford, California: Stanford University Press. Greenberg, Joseph H. 2005. Genetic Linguistics: Essays on Theory and Method, edited by William Croft. Oxford: Oxford University Press. Pedersen, Holger. 1933. "Zur Frage nach der Urverwandtschaft des Indoeuropäischen mit dem Ugrofinnischen." Mémoires de la Société finno-ougrienne 67:308–325. Ruhlen, Merritt. 1987. A Guide to the World's Languages, Volume 1: Classification (only volume to appear to date). Stanford, California: Stanford University Press. Further reading Angere, J. 1956. Die uralo-jukagirische Frage. Ein Beitrag zum Problem der sprachlichen Urverwandschaft. Stockholm: Almqvist & Viksell. Bouda, Karl. 1940. "Die finnisch-ugrisch-samojedische Schicht des Jukagirischen." Ungarische Jahrbücher 20, 80–101. Fortescue, Michael. 1998. Language Relations Across Bering Strait: Reappraising the Archaeological and Linguistic Evidence. London and New York: Cassell. Hyllested, Adam. 2010. "Internal Reconstruction vs. External Comparison: The Case of the Indo-Uralic Laryngeals." Internal Reconstruction in Indo-European, eds. J.E. Rasmussen & T. Olander, 111–136. Copenhagen: Museum Tusculanum Press. Janhunen, Juha. 2009. "Proto-Uralic—what, where, and when?" Suomalais-Ugrilaisen Seuran Toimituksia 258. pp. 57–78. Online article. Mithen, Steven. 2003. After the Ice: A Global Human History 20,000 – 5000 BC. Orion Publishing Co. Nikolaeva, Irina. 1986. "Yukaghir-Altaic parallels" (in Russian). Istoriko-kul'turnye kontakty narodov altajskoj jazykovoj obshchnosti: Tezisy dolkadov XXIX sessii Postojannoj Mezhdunarodnoj Altaisticheskoj Konferencii PIAC, Vol. 2: Lingvistika, pp. 84–86. Tashkent: Akademija Nauk. Nikolaeva, Irina. 1987. "On the reconstruction of Proto-Yukaghir: Inlaut consonantism" (in Russian). Jazyk-mif-kul'tura narodov Sibir, 43–48. Jakutsk: JaGU. Nikolaeva, Irina. 1988. "On the correspondence of Uralic sibilants and affricates in Yukaghir" (in Russian). Sovetskoe Finnougrovedenie 2, 81–89. Rédei, K. 1990. "Zu den uralisch-jukagirischen Sprachkontakten." Congressus septimus internationalis Fenno-Ugristarum. Pars 1 A. Sessiones plenares, 27–36. Debrecen. Sauvegeot, Au. 1963. "L'appartenance du youkaguir." Ural-altaische Jahrbücher 35, 109–117. Sauvegeot, Au. 1969. "La position du youkaguir." Ural-altaische Jahrbücher 41, 344–359. Swadesh, Morris. 1962. "Linguistic relations across the Bering Strait." American Anthropologist 64, 1262–1291. Tailleur, O.G. 1959. "Plaidoyer pour le youkaghir, branche orientale de la famille ouralienne."