In the second analysis, the set of Australasian reference chondrichthyan samples
(see Ward et al., 2008for further information, including GenBank accession numbers) were assembled together with all the
unknown fasta fin sequences, and clustered in MEGA 4 (Tamura
et al., 2007) using a neighbour-joining tree with Kimura 2-parameter distance (Kimura, 1980).