Gray Site Bone galleries Magnifications refer to a 13 inch (32 cm) wide screen set to 800 x 600 pixels. Partial tapir mandible, one of first specimens found. Parts recovered seperately by Martin Kohl and Larry Bolt. Tapir lower leg bone, recovered by Robert Price. Approximately natural size. Specimens recovered by the geological staff of the Department of Transportation, in the weeks following the initial discovery. Mandible fragment, left rear, is probable Teleoceras rhino. Tusk tip, rear center, is from a large but yet unidentified proboscidian. Photo Dr. Robert Hatcher. Large bone fragment, further crushed by bulldozers; reconstructed measures about 10 x 20 x 35 cm. White object is angular chert fragment, from encasing sediment.   Partial crocodilian skull, recovered by Department of Transportation staff. Specimen is approximately 30 cm long.   Tortoise carapace fragments, recovered by Dr Paul Parmalee. Approximately 2/3 natural size   Tapir bone fragments, approximately natural size. Fragment of jawbone with unworn molar in clay. Also noteworthy are 1) warped layer of sediment, and 2) through 6), additional bone fragments.   Stereo pair. Picture arrangement is non-standard; Sit well back from screen and cross your eyes slightly. Close-up (times four) of molar above. Conservation note: The mineral marcasite (orthorhombic iron disulfide, FeS2) is present in some of the fossils and matrix. It may be visible as a dark brassy material in cavities of bones, as above, natural size, and 4 x magnification. More often it exists as a greenish black component in matrix, where it can be recognized by the persistant sulfur odor. Mineral and rock specimens containing marcasite often tarnish, corrode, and crumble over several years or decades. Measures will need to be taken to assure this does not happen. Additional bones: These contain larger images and may take considerable time to download. Tapir jaws and teeth | Tapir bones | Probable rhinoceros bones Home | Links | Plant material | Sediments and invertebrates | Geologic features | Drillholes and stratigraphy | Geologic map | Scenes and activities