| Institution: | 1. Department of Geology and Planetary Science, University of Pittsburgh, 4107 O'Hara Street, Pittsburgh, PA 15260, USA;2. Department of Geosciences, The Pennsylvania State University, University Park, PA 16802, USA;3. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada;4. Department of Earth Sciences, Universidad Pedagógica Experimental Libertador, Caracas, Venezuela;5. Departament de Biologia Animal, Biologia Vegetal i Ecologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain |
