@conference{29ec221502524a268da7117df73b76c2,
title = "The distribution of ostracoderms in the Mid-Ordovician of Laurentia and Gondwana. In: Albanesi. G.L., Beresi, M.S. & Peralta, S.H. (eds) Ordovician from the Andes",
author = "Ivan Sansom and Michael Smith and Philip Donoghue",
year = "2003",
month = jan,
day = "1",
language = "English",
pages = "17",
note = "Proceedings of the 9th International Symposium on the Ordovician System, INSUGEO, Serie Correlacion Geologica ; Conference date: 01-01-2003",
}