1. Department of Geosciences Virginia Tech Blacksburg VA 24061 USA
2. Sección Paleontología de Vertebrados CONICET−Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’ Av. Ángel Gallardo 470 C1405DJR Buenos Aires Argentina
3. Department of Natural Sciences National Museums Scotland Chambers Street Edinburgh EH1 1JF UK
4. Department of Geological & Environmental Sciences Appalachian State University ASU Box 32067 Boone NC 28608‐2067 USA
5. Department of Science & Resource Management Petrified Forest National Park 1 Park Road #2217 Petrified Forest AZ 86028 USA
6. Museum of Texas Tech University Lubbock TX 79409‐3191 USA
7. Department of Geology Durgapur Govt. College J. N. Avenue Durgapur 14 West Bengal India
8. Geological Studies Unit Indian Statistical Institute 203 B. T. Road Kolkata 700108 India
9. Virginia Museum of Natural History 21 Starling Avenue Martinsville VA 24112 USA