Composita cf. subtilita, four articulated specimens
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Composita sp., articulated pedicle and brachial valves
Bob Campbell Geology Museum Formation: Washingtonville Shale.
Composita sp., two articulated specimens
Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.
Composita sp., two crushed, articulated specimens
Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Composita subtilita, four articulated specimens
Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.
Composita subtilita, six articulated specimens
Bob Campbell Geology Museum Formation: Topeka Limestone.
Cyrtina inulata, two articulated specimens
Bob Campbell Geology Museum Formation: Lime Creek Formation.
Cyrtina iowensis, three articulated specimens
Bob Campbell Geology Museum Formation: Lime Creek Formation.