The Northern (West) Assemblage:                                    After (p.31), AMOCO Seminar on Stratigraphic Principles.    

    This assemblage develops along the edge of the Everglades. It is characterized by Anomalocardia. This fauna is seen from Cape Sable to Little Madeira and differs from similar assemblages found from there eastward by the more common occurrence of Cerithium, Modulus, Bulla, Parastarte, and tellins. The elongate razor clam Tagelus is a rare but characteristic indicator of this assemblage.