Fig. 5

Genital development in female Pogona vitticeps embryos. Development progresses from rounded paired swellings between the hindlimbs (a, white arrowheads; score 1), club shape (b, blue arrows; score 2), bilobed hemipenes (c, deepening invaginations create distal bifurcation: black arrow; score 3). The lobes become increasingly accentuated as this invagination deepens (black and white arrows). In females, the hemipenes begin to regress, but maintain their bilobed appearance (d, black arrowhead: cloacal opening; score 4). Females eventually possess hemiclitores (e, blue arrowheads; score 5) before they too regress completely to the pedicel (f; score 6). The anterior and posterior cloacal lips in specimen e were removed to expose the hemiclitores. Scale bar = 1 mm