Table 1.

Overview of premetamorphotic animals examined in this study.

Species	Animals	Olfactory bulb hemispheres	Stages
Xenopus laevis	6	11	49–54 NF
Xenopus tropicalis	5	9	51–52 NF
Scinax granulatus	3	5	31–33 G
Rhinella arenarum	6	10	29–34 G
Ranitomeya variabilis	2	4	27 G
Dendrobates tinctorius	5	9	25–27 G

Stages were determined according to Nieuwkoop and Faber (1994; NF) for the genus Xenopus and using the Gosner (1960) table (G) for all other species.