FIGURE 38. Baculites from the Tepeyac section. A–B, G–H in Ammonoids and their biozonation across the Santonian-Campanian boundary in north-eastern Coahuila, Mexico

FIGURE 38. Baculites from the Tepeyac section. A–B, G–H: Baculites taylorensis, A–B: CPC–2198, bed TPY64; G–H: CPC–2199 before extraction from bed TPY77; C–F, I–L: Baculites haresi, C–F: CPC–2607, bed TPY52; I–L: CPC2606, bed TPY77. Scale: 50 mm.