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Anthracospirifer increbescensis, 14 articulated specimens Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Anthracospirifer increbescensis, articulated specimen in matrix Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Anthracospirifer increbescensis, three articulated specimens Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Anthracospirifer increbescensis, two articulated specimens in matrix Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Athyris sp., pedicle valve in matrix Bob Campbell Geology Museum Formation: Monteagle Limestone.
Athyris sp., three crushed specimens Bob Campbell Geology Museum Formation: Monteagle Limestone.
Athyris sp., three crushed specimens Bob Campbell Geology Museum Formation: Monteagle Limestone.
Atrypa bellula, articulated valves Bob Campbell Geology Museum Formation: Cedar Valley Formation.
Atrypa devoniana, articulated specimen Bob Campbell Geology Museum Formation: Cerro Gordo Shale.
Beecheria sp., articulated specimen Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Beecheria sp., crushed, articulated specimen Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Brachiopod (Brachyspirifer audaculus) Bob Campbell Geology Museum Formation: Silica Shale.
Brachiopod (Neospirifer cameratus) Bob Campbell Geology Museum Formation: Harpersville Formation.
Brachiopod (Platystrophia ponderosa) Bob Campbell Geology Museum Formation: McMillan Formation.
Brachiopod, articulated specimen Bob Campbell Geology Museum Formation: Lime Creek Formation.
Bucanopsis sp., six steinkerns Bob Campbell Geology Museum Formation: Floyd Shale.
Chonetinella sp., 11 shells Bob Campbell Geology Museum Formation: Grenola Limestone.
Chonetinella sp., isolated valve Bob Campbell Geology Museum Formation: Winfield Formation.
Composita aff. subtilita, three shells Bob Campbell Geology Museum Formation: Grenola Limestone.
Composita cf. subtilita, four articulated specimens Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Composita ovata, shells Bob Campbell Geology Museum Formation: Speiser Shale.
Composita sp., 14 articulated specimens Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Composita sp., articulated pedicle and brachial valves Bob Campbell Geology Museum Formation: Washingtonville Shale.
Composita sp., brachipods Bob Campbell Geology Museum Formation: Winfield Formation.
Composita sp., crushed shell Bob Campbell Geology Museum Formation: Monteagle Limestone.
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, articulated valves Bob Campbell Geology Museum Formation: Funston Limestone.
Composita subtilita, articulated valves Bob Campbell Geology Museum Formation: Boyd Shale.
Composita subtilita, articulated valves Bob Campbell Geology Museum Formation: Boyd Shale.
Composita subtilita, four articulated specimens Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.
Composita subtilita, four crushed specimens Bob Campbell Geology Museum Formation: Speiser Shale.
Composita subtilita, six articulated specimens Bob Campbell Geology Museum Formation: Topeka Limestone.
Composita trilobate, valves Bob Campbell Geology Museum Formation: Funston 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.
Cyrtina sp., crushed shell Bob Campbell Geology Museum Formation: Monteagle Limestone.
Cyrtina sp., crushed specimen Bob Campbell Geology Museum Formation: Monteagle Limestone.
Cyrtina sp., pedicle valve and crushed specimen Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Cyrtina sp., two crushed shells Bob Campbell Geology Museum Formation: Monteagle Limestone.
Cyrtospirifer cf. plicatus, 11 articulated specimens and isolated valves Bob Campbell Geology Museum Formation: Lime Creek Formation.
Cyrtospirifer cf. plicatus, eight isolated valves and two articulated specimens Bob Campbell Geology Museum Formation: Lime Creek Formation.
Cyrtospirifer whitneyi, articulated valves Bob Campbell Geology Museum Formation: Cerro Gordo Shale.
Derbyia cf. cyonbula, pedicle valves Bob Campbell Geology Museum Formation: Funston Limestone.
Derbyia crassa, articulated specimen Bob Campbell Geology Museum Formation: Putnam Formation; Coleman Jct. member.
Derbyia cymbula, articulated specimen Bob Campbell Geology Museum Formation: Putnam Formation; Coleman Jct. member.
Derbyia cymbula, two articulated specimens Bob Campbell Geology Museum Formation: Speiser Shale.
Derbyia sp., shells Bob Campbell Geology Museum Formation: Speiser Shale.