Among my memories of C. Repenning are the many times he showed an active interest in helping other paleontologists – including me and my students – with their research. In 1972 when a group of students from Berkeley and I first joined H. Garbani to work in Garfield County we had to record the majority of our geological and locality data on aerial photographs. The only United States Geological Survey map available covering part of our research area was the Maloney Hill (1958) 15 minute quadrangle. In contrast, 7.5 minute quadrangles covering the valley of Bug Creek and other areas around the Big Dry Arm of Ft. Peck Reservoir were just beginning to be released. I asked Rep when the mapping project would result in topographic maps of the valley of Hell Creek and adjacent areas. He said that he would look into the matter and see what he could do. He did a lot! By 1977, when D. Archibald completed his dissertation research, the preliminary editions of the 7.5 minute Trumbo Ranch and Hell Hollow quadrangles were published and orthophoto quadrangles of adjacent areas were available. In not too many more years we benefited from complete map coverage of our research area. Thanks Rep!
The material of Eoconodon from Garfield County described here is part of the collection amassed by UCMP field crews over the last 35 years. Thanks for their efforts in this field and subsequent laboratory work are due to H. Garbani and many students and staff of the museum. I also thank Reverend W. Moore for the opportunity to study and cast fragments of a dentary of E. hutchisoni. In preparation of this study I benefited from discussions with J. Geisler, P. Holroyd, and J. Theodor. I also gratefully acknowledge the help of T. Williamson and T. Carr who shared information on "triisodontids" and the results of their revision of Oxyclaenus. Illustrations in Figures 2-5 are the work of L. Cunningham. Financial support for field and laboratory work was provided through grants from the National Science Foundation (most recently EAR 9505847) and the Annie M. Alexander endowment of the University of California, Museum of Paleontology. Field work was facilitated by members of the Montana offices of the Bureau of Land Management and the staff of the Charles M. Russell National Wildlife Refuge. This is UCMP contribution no. 2004.