1. Museo Paleontológico Egidio Feruglio Av. Fontana 140 Trelew Chubut 9100 Argentina
2. Consejo Nacional de Investigaciones Científicas y Técnicas Argentina
3. LH Bailey Hortorium, Plant Biology Section, School of Integrative Plant Science Cornell University New York 14853 USA
4. Department of Geosciences and Earth and Environmental Systems Institute Pennsylvania State University University Park Pennsylvania 16802 USA
5. School of Biological Sciences University of Tasmania Sandy Bay Tasmania 7001 Australia