Sedimentology, conodonts, structure, and correlation of Silurian and Devonian metasedimentary rocks in Denali National Park, Alaska: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1996

1998 ◽  
pp. 71-98
Author(s):  
Julie A. Dumoulin ◽  
Dwight C. Bradley ◽  
Anita G. Harris
Author(s):  
Kari A. Prassack ◽  
Laura C. Walkup

AbstractA canid dentary is described from the Pliocene Glenns Ferry Formation at Hagerman Fossil Beds National Monument, south-central Idaho, USA. The specimen possesses traits in alliance with and measurements falling within or exceeding those of Canis lepophagus. The dentary, along with a tarsal IV (cuboid) and an exploded canine come from the base of the fossiliferous Sahara complex within the monument. Improved geochronologic control provided by new tephrochronologic mapping by the U.S. Geological Survey-National Park Service Hagerman Paleontology, Environments, and Tephrochronology Project supports an interpolated age of approximately 3.9 Ma, placing it in the early Blancan North American Land Mammal Age. It is conservatively referred to herein as Canis aff. C. lepophagus with the caveat that it is an early and robust example of that species. A smaller canid, initially assigned to Canis lepophagus and then to Canis ferox, is also known from Hagerman. Most specimens of Canis ferox, including the holotype, were recently reassigned to Eucyon ferox, but specimens from the Hagerman and Rexroad faunas were left as Canis sp. and possibly attributed to C. lepophagus. We agree that these smaller canids belong in Canis and not Eucyon but reject placing them within C. lepophagus; we refer to them here as Hagerman-Rexroad Canis. This study confirms the presence of two approximately coyote-sized canids at Hagerman and adds to the growing list of carnivorans now known from these fossil beds.


Circular ◽  
2008 ◽  
Author(s):  
W.R. Page ◽  
K.J. Turner ◽  
R.G. Bohannon ◽  
M.E. Berry ◽  
V.S. Williams ◽  
...  

2000 ◽  
pp. 38-65 ◽  
Author(s):  
Tom Patterson

The late Heinrich Berann, from Austria, was generally regarded as the most accomplished panoramist of all time. During the decade before his retirement in 1994, Berann painted four panoramas for the U.S. National Park Service (NPS) that demonstrated his genius for landscape visualization. This paper examines the widely admired, but little understood, vocation of panorama making, with emphasis on Berann’s NPS pieces, concepts, and techniques. Explanation is offered about how the panorama for Denali National Park, Alaska, was planned, compiled, sketched, and painted—starting from a blank sheet of paper. Berann’s techniques for landscape manipulation are then analyzed, including his unorthodox habit of rotating mountains and widening valleys, and his unique interpretations of vertical exaggeration. His graphical special effects used for portraying realistic environments are reviewed. The paper finishes with illustrations that compare Berann’s panoramas to digitallygenerated landscapes.


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