Ethmoturbinal region in baboons (Papio anubis) across age, viewed in a coronal plane. A Schematic illustration of a mid-fetal specimen (CRL 115 mm), redrawn after Maier (2000, fig. 5.4, serial section # 165). Two ethmoturbinals (ET I, II) are indicated in this section. B Late fetal specimen (Papio107, 150 days gestation), showing an ossified ET I and II in a similar position to the earlier stage fetus. C, D One year, 32 days old specimen (Papio108), showing more fully grown ET I and II (C). More posteriorly, a third ethmoturbinal (ET III) is visible as a small mucosal bulge only, with a small spur within it (D). E Adult individual (amnh:mammals:m-51380) showing the rostrally elongated ET I, and ET II. Abbreviations: CC, cavum cranii; dP2, deciduous upper 2nd premolar; LA, lamina anterior of ET I; LAP, processus anterior of the LA of ET I; M1, upper 1st molar; MT, maxilloturbinal; OR, orbita; PN, paries nasi; PU, processus uncinatus; SN, septum nasi; ZY, zygomatic. Scale bars: 10 mm.