Brain features of S. crassicaudata between stages 27 and adulthood.

Developmental series of fixed dunnart brains showing a dorsal view of the whole brain (left column) and corresponding DAPI-stained coronal section (right column) through the approximate region indicated by dotted lines. The main brain regions are colour-coded, and stages and approximate postnatal (P) days are indicated. Arrowheads show the rhinal fissure (rf). ac, anterior commissure; BS, brainstem; CA, cornu ammonis hippocampi; Cb, cerebellum; Cd, caudate; Cg, cingulate cortex; Cla, claustrum; DG, dentate gyrus; ec, external capsule; En, endopiriform; f, fornix; hc, hippocampal commissure; ic, internal capsule; IC, inferior colliculus; Ins, insular cortex; IsoCx, isocortex; L1-6, isocortical layers 1–6; lot, lateral olfactory tract; MZ, marginal zone; OB, olfactory bulb; OT, olfactory tubercle; Pir, piriform cortex; Pir2, piriform cortex, layer 2; PoA, preoptic area; Pu, putamen; SC, superior colliculus; Se, septum; SP, subplate; SVZ, subventricular zone; VZ, ventricular zone. Scale bars: 2000 μm in whole brains, and 200 μm in coronal sections.