title: List of fossiliferous stratigraphic units in Delaware
text: # List of fossiliferous stratigraphic units in Delaware
  
  This article contains a list of fossil-bearing stratigraphic units in the state of Delaware, U.S.
  
  ## Sites
  
  | Group or Formation | Period |
  | - | - |
  | Chesapeake Group/Calvert Formation | Neogene |
  | Crosswicks Clay | Cretaceous |
  | Englishtown Formation | Cretaceous |
  | Marshalltown Formation | Cretaceous |
  | Matawan Formation | Cretaceous |
  | Merchantville Formation | Cretaceous |
  | Mount Laurel Formation | Cretaceous |
  