Photo Archives
 
Filters: Collection Name: "James H. Madsen" Collection: "uum_map" Year End: 1969
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1 A geologic map of Utah, illustrates the strata conventionally colored differently according to geological age. Notice the San Rafael Swell, the dominant geologic and geographic feature in the eastcentral part of the State. The Cleveland-Lloyd Dinosaur Quarry (C-LDQ) is located on the northern end or nose of the Swell.P1048 James H. Madsen Photograph CollectionP1048n002
2 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.P1048 James H. Madsen Photograph CollectionP1048n003
3 These colorful, Morrison Formation exposures are similar to the rock outcrops where dinosaur bones are found in many localities across the Colorado Plateau of Utah, New Mexico, and Colorado.P1048 James H. Madsen Photograph CollectionP1048n004
4 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.P1048 James H. Madsen Photograph CollectionP1048n008
5 Dinosaur hunters often enjoy a camping experience, while prospecting for and collecting dinosaur bones, as seen here at the Cleveland-Lloyd Dinosaur Quarry. The Quarry was active and open full-time during the summers of 1960 through 1964. It has been worked sporadically during the past four decades; however, prior to that the first scientific collecting of record was done in 1927. The most intensive collecting was done during the summers of 1939-41 and 1960-64. (May 1960)P1048 James H. Madsen Photograph CollectionP1048n009
6 Painting interpretation of dinosaur life.P1048 James H. Madsen Photograph CollectionP1048n009a
7 A large house trailer, seriously damaged traveling the rough road to the C-LDQ, was the solution to the housing problem the second year (1961) of the University of Utah Cooperative Dinosaur Project (UUCDP). (June 1961)P1048 James H. Madsen Photograph CollectionP1048n010
8 The last attempt at housing the C-LDQ field crew was a 16 foot square shack that boasted a gas stove and refrigerator, a table, four chairs, and two folding cots. (June 1962)P1048 James H. Madsen Photograph CollectionP1048n011
9 In the early years, young visitors to the C-LDQ were allowed to dig in the spoil piles next to the excavation. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n012
10 If the young prospectors were lucky and raised their hands when asked about their success, we would have them "donate" their significant finds to the collection. They were allowed to keep fragments of no scientific value. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n013
11 Prior to excavation the Quarry surface was carefully divided into a one yard grid system. Note the stakes and flags, which facilitated the precise mapping of each bone before its removal and transport to the laboratory at the University of Utah for preparation, curation, and eventual study.P1048 James H. Madsen Photograph CollectionP1048n016
12 For nearly 20 years following the initial Quarry opening by the University of Utah Cooperative Dinosaur Project in 1960, it was necessary to open and close the Quarry with heavy equipment each field season to protect it from vandalism and illegal collecting. (October 1961)P1048 James H. Madsen Photograph CollectionP1048n017
13 The fossiliferous unit at the C-LDQ, which consists of poorly stratified to blocky, bentonitic shales, is overlain by a dense, hard, siliceous, freshwater limestone. The surface between the two units shows evidence of channeling as seen here. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n018
14 Some fossil bones from the C-LDQ, such as this left premaxilla of Allosaurus, require minimal or no special preparation in the laboratory, but such is the exception rather than the rule.P1048 James H. Madsen Photograph CollectionP1048n019
15 In numerical order, each fossil is cataloged, measured, identified, and carefully plotted on a base map before it is removed from the Quarry surface. This is just one part of the precise record keeping at the Quarry and compilation of the important data on the thousands of individual fossils exposed and collected there. (July 1961)P1048 James H. Madsen Photograph CollectionP1048n020
16 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.P1048 James H. Madsen Photograph CollectionP1048n021
17 These are fossil bones as discovered and uncovered in place at the Quarry. To one side are some of the tools used by the paleontologists who collect the fossils.P1048 James H. Madsen Photograph CollectionP1048n022a
18 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.P1048 James H. Madsen Photograph CollectionP1048n022b
19 When a fossil bone is prepared for removal from the Quarry in a plaster jacket, it is first uncovered and left supported on a narrow matrix pedestal. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n023
20 Second, the more fragile and sometimes fractured fossil bones must be enclosed in a burlap and plaster jacket; which like the shell of an egg protects the contents so that each unit can be safely transported to the laboratory for final preparation and study. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n024
21 These paired, pelvic bones of a large Allosaur are called pubes. They are shown here to illustrate the size of the circular opening at the top, which represents the maximum dimension of the oviduct or birth canal. It appears in this case to have been somewhat close to the diameter of a softball in size. (July 1961)P1048 James H. Madsen Photograph CollectionP1048n025
22 This dorsal rib is singularly diagnostic of the presence of the rare theropod, Ceratosaurus in the C-LDQ, however, numerous other bones of this individual were found over the years.P1048 James H. Madsen Photograph CollectionP1048n026
23 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.P1048 James H. Madsen Photograph CollectionP1048n027
24 This Allosaurus femur, the upper long bone of the hind leg, as found in place at the Quarry, shows displacement at mid-length. Apparently, this was the result of a small, reverse fault having an approximate displacement of about 12 centimeters. The movement occurred long after the enclosing sediments had become lithified, changed to limestone and shale. (July 1961)P1048 James H. Madsen Photograph CollectionP1048n028
25 As an expedient and to minimize the necessary handling and preparation time; each bone, as practical, is wrapped, nested in paper excelsior, and boxed for transportation from the field to the laboratory. More fragile bones, regardless of size, require the conventional plaster and burlap packaging.P1048 James H. Madsen Photograph CollectionP1048n029
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