Conservation of the SBN across vertebrates. Evolutionary depiction illustrating the conservation of telencephalic brain regions within the SBN. Shown is a schematic of transverse sections from the major vertebrate groups, with colors indicating homologous developmental fields. The pallium is shaded in blue, the ventral pallium (intermediate zone) is shaded green, medial ganglion eminence (MGE) and anterior entopeduncular area (AEP) are shaded yellow, lateral ganglionic eminence (LGE) is shaded red, and the preoptic area (POA) is shaded orange. blAMY, basolateral amygdala; BNST, bed nucleus of the stria terminalis; Dl, lateral part of the dorsal telencephalon; Dm, medial part of the dorsal telencephalon; HIP, hippocampus; meAMY, medial amygdala; NAcc, nucleus accumbens; Str, striatum; Vc, central part of the ventral telencephalon; Vd, dorsal part of the ventral telencephalon; Vl, lateral part of the ventral telencephalon; Vs, supracommissural part of the ventral pallium; Vv, ventral part of the ventral telencephalon; VP, ventral pallidum (VP). Reprinted from ref. 34.