Tertiary

• Pleistocene
  • Gelasian

The Gelasian in South East England consists of

• Red Crag Formation
• Coralline Crag Formation

Harmer reports of

• Aporrhais pespelecani from the Red Crag Formation and Coralline Crag Formation

Stromboidea of the Gelasian of America:

• Lentigo fetus Jung & Heitz, 2001
• Strombus elegantissimus Landau, Kronenberg, Herbert & Silva, 2011

References

• BGS stratigraphical framework and lithodemic scheme reports and charts
• Hamblin, R.J.O., Moorlock, B.S.P., Booth, S.J., Jeffery, D.H. & MorigiI, A.N. (1997). The Red Crag and Norwich Crag formations in eastern Suffolk. Proceedings of the Geologists' Association, 108, 11-23
• Wikipedia