Later stage of excavation showing middle stratum of freshwater marl (c. 1 m thick) wedged between two layers of marine shell layers (each c. 3 m thick).

 
 
  Part of: Jochum A, Bochud E, Haberthür D, Lee HG, Hlushchuk R, Portell RW (2023) Fossil Carychiidae (Eupulmonata, Ellobioidea) from the Lower Pleistocene Nashua Formation of Florida, with the description of a new species. ZooKeys 1167: 89-107. https://doi.org/10.3897/zookeys.1167.102840