Early Albian – (Uppermost Lower Greensand)

Zonal and Sub-Zonal Ammonites

Douvilleiceras mammillatum Zone

Zonal Ammonite Douvilleiceras mammillatum		Sub-Zonal Ammonite Pseudosonneratia (Isohoplites) steinmanni [Hoplites (Isohoplites) eodentatus]
Sub-Zonal Ammonite Protohoplites (Hemisonneratia) puzosianus		Sub-Zonal Ammonite Otohoplites raulinianus
	Sub-Zonal Ammonite Cleoniceras floridum

Reference:

Wright C. W. 1996. Treatise on Invertebrate Paleontology (Part L Mollusca 4 Revised) Volume 4: Cretaceous Ammonoidea