ACKNOWLEDGMENTS

Preparation and preliminary description of PEFO 34035 was originally undertaken as an undergraduate senior thesis at Utah State University by BJB. We would like to thank S. Williams (PEFO) and P. Holroyd (UCMP) for access and information on specimens. Fieldwork and collection was conducted by S. Nesbitt, R. Irmis, M. Stocker, J. Martz, and L. Browne. A portion of PEFO 33978 was prepared by J. Martz. Some of the specimen photographs were provided by R. Irmis. S. Nesbitt and R. Irmis, as well as two anonymous reviewers and editor P. D. Polly, provided discussion and critical reviews that greatly improved the manuscript. We would like to further acknowledge S. Nesbitt for recommending that this material be described and published independent of his work on Vancleavea . Funding for fieldwork and preparation was provided by the Federal Fee Recreation Act Program, the Geological Society of America Geocorps program, the Utah State University Undergraduate Research and Creative Opportunities (URCO) grants, and the Petrified Forest Museum Association. This is Petrified Forest National Park Paleontological Contribution No. 22.