Orbiculoidea missouriensis, six isolated valves
Bob Campbell Geology Museum Formation: Altamont Limestone.
Orthida brachiopod, three articulated specimens
Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Orthoceras sp.
Bob Campbell Geology Museum Donated: Mr. Robert J. Schabilion; In memory: Betty L. Newton Curator.
Orthotetes kaskaskiensis, brachial valve
Bob Campbell Geology Museum Formation: Hartsella Sandstone.
Ostracode, limestone packed with disarticulated ostracodes
Bob Campbell Geology Museum Formation: Lukota Formation; Chilson mem.
Ostrea percrassa, four left valves, one right valve
Bob Campbell Geology Museum Formation: Eastover Formation.
Ostrea sculpturata, articulated right and left valves
Bob Campbell Geology Museum Formation: Eastover Formation.
Ostrea sculpturata, three isolated left valves
Bob Campbell Geology Museum Formation: Eastover Formation.
Ostrea sp., unassociated right and left valves
Bob Campbell Geology Museum Formation: Clinchfield Formation.
Ostrea titan, large elongated shell
Bob Campbell Geology Museum Formation: Santa Margarita Sandstone.
Oyster (Actinoceramus cf. sulcatus)
Bob Campbell Geology Museum 100 million years old; Formation: Duck Creek Limestone; Donated: Mr. and Mrs. Alvin Gosnell.
Oyster (Cubitostrea sellaeformis), isolated valves of small individuals (right valves)
Bob Campbell Geology Museum Formation: Santee Limestone.
Oyster (Exogyra ponderosa)
Bob Campbell Geology Museum 73 million years old; Formation: Marlbrook Marl.
Oyster (Ostreidae), four valves, one steinkern
Bob Campbell Geology Museum Formation: Santee Limestone.
Oyster (Ostreidae), steinkern (right valve)
Bob Campbell Geology Museum Formation: Santee Limestone.
Oyster (Ostreidae), two isolated left valves
Bob Campbell Geology Museum Formation: Santee Limestone.
Oyster (Ostreidae), two unassociated valves
Bob Campbell Geology Museum Formation: Santee Limestone.
Oyster, two isolated right valves in matrix
Bob Campbell Geology Museum Formation: Santee Limestone.
Panopea goldfussi, incomplete articulate specimen
Bob Campbell Geology Museum Formation: Eastover Formation.
Panopea goldfussi, three left valves and two right valves
Bob Campbell Geology Museum Formation: Eastover Formation.
Patystrophia ponderosa, brachiopods in matrix
Bob Campbell Geology Museum Formation: McMillan Formation.
Patystrophia ponderosa, brachiopods in matrix
Bob Campbell Geology Museum Formation: McMillan Formation.
Pentacrinus asteriscus, 16 stem segments consisting of several fused columnals
Bob Campbell Geology Museum Formation: Sundance Formation.
Pentremites sp., crushed, incomplete specimen in matrix
Bob Campbell Geology Museum Formation: Monteagle Limestone.
Periarchus lyelli, partial test in matrix
Bob Campbell Geology Museum Formation: Tupelo Bay Formation.
Peronopsis sp., complete exoskeleton in dorsal view
Bob Campbell Geology Museum Formation: Conasauga Formation.
Peronopsis sp., natural mold of complete exoskeleton
Bob Campbell Geology Museum Formation: Conasauga Formation.
Peronopsis sp., single complete specimen
Bob Campbell Geology Museum Formation: Conasauga Formation.
Peronopsis sp., two complete exoskeletons
Bob Campbell Geology Museum Formation: Conasauga Formation.
Peronopsis sp., two complete exoskeletons
Bob Campbell Geology Museum Formation: Conasauga Formation.
Phacoides anodonta, four left and four right valves
Bob Campbell Geology Museum Formation: Eastover Formation.
Phacoides contractus, three left and five right valves
Bob Campbell Geology Museum Formation: Eastover Formation.
Phalacrocorax wetmorei, distal left carpometacarpus II
Bob Campbell Geology Museum Formation: Bone Valley Deposits.
Phalacrocorax wetmorei, incomplete proximal right ulna
Bob Campbell Geology Museum Formation: Bone Valley Deposits.
Phalium granulatum, snail shell with low pointed spire and inflated body whorl
Bob Campbell Geology Museum
Pharkidonotus percarinatus, globular planispiral shell, bilateral symmetry
Bob Campbell Geology Museum Formation: Graham Formation; Wayland shale member.
Pharkidonotus percarinatus, globular, planispiral shell, bilateral symmetry strong ridge down the center
Bob Campbell Geology Museum Formation: Graham Formation; Wayland shale member.
Phillipsia sp., pygidium in matrix
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Pholadomya sp., two clam steinkerns comp. of black phosphate material
Bob Campbell Geology Museum Formation: Peedee Formation.
Phymatopleura brazoensis, conical high-spired shell with a shallow sinus on the outer lip
Bob Campbell Geology Museum Formation: Graham Formation; Wayland shale member.
Phymosoma texanum, complete test
Bob Campbell Geology Museum Formation: Fredericksburg Formation; Goodland Ls.