1. School of Geography, Earth and Environmental Sciences University of Birmingham Edgbaston, Birmingham B15 2TT UK
2. Department of Zoology Federal University of Paraná 81531–980 Curitiba Brazil
3. Department of Anatomical Sciences Stony Brook University Stony Brook NY 11794 USA
4. Department of Earth Sciences Natural History Museum London SW7 5DB UK
5. Sección Paleontolgía de Vertebrados CONICET – Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’ Ángel Gallardo 470 (C1405DJR) Buenos Aires Argentina
6. School of Environment and Technology University of Brighton Lewes Road Brighton BN1 4JG UK
7. Department of Biology and Biochemistry University of Bath Claverton Down, Bath BA2 7AY UK