Koot, M B, Romano, C, Twitchett, R J, Cuny, G G R & Hart, M B 2013, ' Diversity dynamics in the global Permian-Triassic chondrichthyan fauna: taxonomic diversity, palaeoecology and distribution ', 6th International Meeting on Mesozoic Fishes, Vienna, Austria, 04/08/2013-10/08/2013 .