Lihat Juga

• Fig. 14. A in Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina
  oleh: LANDMAN, NEIL H., et al.
  Terbitan: (2004)
• Fig. 13. A–Z, a–f. Baculites vertebralis Lamarck, 1801, AMNH loc. 3252 in Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina
  oleh: LANDMAN, NEIL H., et al.
  Terbitan: (2004)
• Fig. 18. A–Q, S–Y. Discoscaphites minardi, n in Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina
  oleh: LANDMAN, NEIL H., et al.
  Terbitan: (2004)
• Cephalopods from the Cretaceous-Paleogene (K-Pg) boundary interval on the Brazos River, Texas, and extinction of the ammonites
  oleh: Witts, James D., et al.
  Terbitan: (2021)
• FIGURE 2 in Cephalopods from the Cretaceous-Paleogene (K-Pg) boundary interval on the Brazos River, Texas, and extinction of the ammonites
  oleh: Witts, James D., et al.
  Terbitan: (2021)