Ammonite and Orthoceratid

Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Orthoceratoidea Two samples of shale. The largest sample has a small cast of an orthoconic longicone specimen with visible septa and transverse sutures. The smaller sample is of a large cast of an serpenticone shell with four visible whorls; The two inner whorls forming the umbilicus are fairly weathered with no defining characteristics. The outer whorl has partial visible ribs.