Clam (Phlaclomya), three clam steinkerns composed of black
Bob Campbell Geology Museum Formation: Peedee Formation.
Ammonite (Desmoceras sp.)
Bob Campbell Geology Museum 110 million years old; Donated: H. Abercrombie.
Texigrypaea marcoui, small left valve, highly convex, thick shelled
Bob Campbell Geology Museum Formation: Fredericksburg Formation.
Ammonite (Eopachydiscus marcianus)
Bob Campbell Geology Museum 100 million years old; Formation: Duck Creek Limestone; Donated: Mr. and Mrs. Alvin Gosnell.
Pholadomya sp., two clam steinkerns comp. of black phosphate material
Bob Campbell Geology Museum Formation: Peedee Formation.
Architectonica voragiformis, incomplete steinkern
Bob Campbell Geology Museum Formation: Peedee Formation.
Ammonite (Placenticeras sp.)
Bob Campbell Geology Museum 70 million years old; Formation: Bearpaw Shale.