Photo Archives
 
Filters: Format: "image/jpeg" Collection Name: "James H. Madsen"
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176 This is a view of the main interpretive exhibit, an Allosaurus, inside the Visitor Center at the Cleveland-Lloyd Dinosaur Quarry. The Center is open on a limited basis during the summer months and not at all for the rest of the year. The Quarry, Visitor Center, and picnic areas are supervised and maintained by the United States, Department of the Interior, Bureau of Land Management with the support and excavation at various times of the College of Eastern Utah, Prehistoric Museum, the Earth Science Museum at Brigham Young University, and the Utah Museum of Natural History.1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999Image
177 This is an accurate replica of the only egg discovered in the C-LD Q. It was found in a part of the quarry associated with a predominance of Allosaur bones and, very speculatively, is thought to be an egg of that most common genus in the C-LDQ.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
178 This is an exceptional occurrence of fossil bones in the Quarry, an articulated sequence of midcaudal vertebrae of Ceratosaurus. More commonly the fossil bones of a single individual are scattered over an area up to ten meters or more in diameter.1961-06Image
179 This is another unusual series of articulated, caudal vertebrae. These bones belong to the uncommon Diplodocid, sauropod dinosaur, Barosaurus; which is represented as a solitary taxon in the C-LDQ. Single taxa are especially important in a mass burial situation like the C-LDQ, because they provide taphonomic data not available from the remains of multiple, but different sized individuals of the same dinosaur.1961-06Image
180 This is the anterior end of the left dentary (lower jaw) of Ceratosaurus.It has two beautifully preserved teeth exposed showing the taxonomically characteristic, longitudinal grooves along the inner surfaces. Ceratosaurus is a rare, predatory dinosaur of the late Jurassic Period. There is only one of these flesh-eaters in the Cleveland-Lloyd Quarry; however, at least five others are known from various Morrison Formation exposures in the Colorado Plateau and Wyoming. Ceratosaurus is also known from the Tendaguru beds of Tanzania in east Africa.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
181 This is the head skeleton and neck of Allosaurus presented in a formal garden setting by the generous lady who purchased the metal buildings, which now protect the C-LDQ excavation.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
182 This is the same left ilium of Stokesosaurus prepared and ready for study. (April 1972)1972-04Image
183 This life-size restoration in bronze of Albertosaurus, a common flesh- eating dinosaur from the badlands of Alberta, Canada, was sculpted by David Thomas, a talented artist from Albuquerque, New Mexico. Albertosaurus is known from Utah by tracks and teeth collected from the coal mines in Carbon and Emery Counties, but as yet no bones have been found.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
184 This may appear to be a careful excavation for fossils. Pot-holing is not an acceptable quarrying procedure, because it complicates the collection of the fossils. Actually this is a test hole dug to determine the depth and extent of the fossiliferous horizon. (June 1960)1976Image
185 This oil painting by Utah artist, Gale Hammond, is his interpretation of dinosaur life at the Cleveland-Lloyd Quarry 147.5 million years ago. A large Allosaur looks on, while a second predator attacks a Camptosaur. Notice the vegetation and a ponderous sauropod dinosaur wading the shallow lake in the background. Few dinosaur Paleontologists now agree that sauropods spent much time swimming or wading, thereby risking getting mired in the mud of or adjacent to shallow bodies of water.1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999Image
186 This original skull of Ceratosaurus magnicornis is of the type specimen collected west of Fruita, Colorado and described for publication by the Utah Geological Survey. (March 1977)1977-03Image
187 This pathological, fossil rib is representative of about 2% of the dinosaur bones from the Cleveland-Lloyd Dinosaur Quarry, which exhibit anomalous conditions that record various kinds of disease or injury. Such bones are dramatic evidence that the dinosaurs suffered maladies and injuries similar to those of modern animals. (March 1994)1994-03Image
188 This sacrum of a Camarasaur is in the collections of the Earth Science Museum at Brigham Young University. It exhibits the same tooth mark pattern as noted on a similar bone complex collected from the C-LDQ.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
189 This section of the composite Cleveland-Lloyd Quarry map illustrates the jumbled condition of bones, as they were at the time of burial. They appear as though the disarticulated parts of nearly six dozen dinosaurs had been stirred into a huge pot of mud and left to be found, unscrambled, and described by vertebrate paleontologists 147 million years later. Accurate maps and carefully written records are an essential part of dinosaur collecting and subsequent scientific research.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
190 This silhouette is part of the display in the Visitor Center, which shows the place in time of the C-LDQ dinosaurs.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
191 This speaker is unidentified - may be a B.L.M. official.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
192 This thin-section of bone from an Allosaurus radius shows a classic alternation of lamellated annuli and non-lamellated zones, confirming the presence of true zonal bone in Allosaurus. Photo and slide were prepared and described by Researcher, Dr. Robin Reid. Magnification X 100.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
193 This tooth of Allosaurus is representative of most theropods (carnivorous dinosaurs) in being sharply pointed and curved with serrate edges like the blade of a steak knife. These dinosaurs did not chew their food, but tore off large chunks of flesh and bone, which they swallowed whole. (May 1968)1968-05Image
194 This view of the Cleveland-Lloyd Dinosaur Quarry (C-LDQ) in Emery County, Utah is typical of the primitive landscape and isolated areas, where many of Utah's dinosaurs are found and collected.1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999Image
195 Three of the first mounted dinosaurs from the C-LDQ were displayed in 1968 at the opening of the new Utah Museum of Natural History. They are an Allosaurus attacking a Camptosaurus, while a second Allosaurus looks on.1968Image
196 Three-dimensional, life-size models are very popular in many dinosaur exhibits around the world. Among the best are those to be seen at the Utah Fieldhouse of Natural History, a museum in Vernal, Utah. Triceratops is seen in the foreground of this photograph taken shortly after a Utah winter snow storm.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
197 Tools and preassembled sections are laid out in the order of assembly prior to mounting. (October 1988)1968-10Image
198 Tools and supplies commonly used here are: ice-pick, brush,screwdriver, bayonet, broom, trowel, knee pads, scoop, glue, sample bags, insect spray, boxes, and tissue paper. Minimal preparation is done to facilitate collection in the field, but the careful, finish preparation on each bone is done only after the fossils have been carefully transported to the laboratory.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
199 Two dorsal ribs, Allosaurus.1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999Image
200 Two humeri from different sizes of Allosaurus. Large one is right side and small one is left side.1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979Image
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