Fig. 1 in Mitochondrial DNA sequences suggest unexpected phylogenetic position of Corso-Sardinian grass snakes (Natrix cetti) and do not support their species status, with notes on phylogeography and subspecies delineation of grass snakes

Fig. 1 Maximum likelihood (ML) tree for Natrix sequences calculated with RAxML based on 3,806 bp of mtDNA (ND1, ND2, ND4, cyt b). Numbers above nodes are thorough bootstrap values (RAxML); below nodes, Bayesian posterior probabilities and bootstrap values obtained under maximum parsimony (MP; not shown for some terminal clades with short branch lengths). For new samples, voucher codes (Table 1)