Fig. 1

DIPROSOPUS: Exencephalic female exhibit (case 4) with diprosopus tetrophthalmus and discordant unilateral CLP (a). Anencephalic female diprosopus tetrophthalmus (case 1) with concordant contralateral CLP (b). Female diprosopus triophthahlmus (case2) with cebocephaly of the right face. The left face shows right-sided anophthalmia in the presence of a right palpebral fissure, right-sided arrhinia and double unilateral CLP (c). Double-faced female figurine 1200–900 B.C.E., early formative Tlatilco ceramic with traces of pigment, h. 9.5 cm, w. 4.8 cm, d. 2.1 cm (3 3/4 × 1 7/8 × 1 3/16 in.), Princeton University Art Museum; gift of Gillett G. Griffing 1999–245 (d). Double-faced female figurine 500–400 B.C.E., middle formative Tlatilco ceramic with pigment, h. 5.7 cm (2 ½ in), the Art Institute of Chicago. Gift of Ethel and Julian Goldsmith 2008–676 (e); Paul Klee’s diprosopus tetrophthalmus symbolizing the ‘Parent’s Image', watercolour on handkerchief on cardboard 1933 357, 45 × 37 cm, private property, USA (f). Case 7—Heteropagous parasitic single chest twins showing diprosopus with 4 ears, two mouths, arrhinia and two palpebral fissures, each with a lower lid notch), indicating cyclopic fusion (g). Schedel’s coloured print of a monocephalic man showing partial diprosopus with 4 eyes, 1 nose and 1 mouth (Schedel’s world chronicle 1493, Bavarian State Library Munich, Rar. 287, fol. 12v) (h)