1. Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania, 16802, USA.
2. Herbario Trelew, Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco – Sede Trelew, 9 de Julio 25, U9100GYO Trelew, Argentina.
3. L. H. Bailey Hortorium, Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York, 14853, USA.
4. Museo Paleontológico Egidio Feruglio, Av. Fontana 140, U9100GYO Trelew, Argentina.