relationships between the three lissamphibian orders and one or more specific
dissorophoid taxa must await a thorough phylogenetic analysis of crownward
temnospondyls. Interestingly, Shishkin (1998) discussed a relict and possibly neotenous
Figure 11.8 New analysis plotted on a timescale (Ruta et al. 2003).
MARCELLO RUTA AND MICHAEL I.COATES 249