FIGURE 5 in A Pliocene goodeid fish of the Paleolake Amajac, Sanctórum, Hidalgo, Mexico

FIGURE 5. Details of IGM 13125 (part), paratype of Paleocharacodon guzmanae gen. and sp. nov., from the lacustrine deposits of the Paleolake Amajac, in Sanctórum, Hidalgo, central Mexico. A) Head observed under white light. B) Unborn fishes preserved in the abdominal cavity, observed under UV light. Abbreviatures: fr, frontal; la, lacrimal; let, lateral ethmoid; psp, parasphenoid (note its anterior end, bifid and with no lateral expansion); black arrows show articulated vertebrae of unborn fishes; red arrows show the pectoral fin of an unborn fish.