also a variety of others. Oysters commonly clustered, fair number of Terebridae with two valves - also Posinopsis. One of few localities where P. lingiformis + P. nebrascensis loose in sand. Shark + other teeth, fish parts, crustacean parts and other stuff. I am has good data on this locality. Locality 84, Butte in over type Bullhead Butte on east side of Bullhead-Walker road in center E1/2, NW1/4, NE1/4, sec 11, T21N, R24E, Bullhead quad, Corson Co, So.Dak. Bullhead member cropped by oyster bed in sand. This is in type over designated by Stevenson. Shows sandy bedded beds in fair exposure, mantled by slough from oyster bed. In road gutter some shells in sand and an otolith on crop. Oyster-bearing sand has those in place with both valves and also loose of shell debris. Whether this is sandy bed in Bullhead or is colgate is not evident.