1. Bristol Palaeobiology Group, School of Earth Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, U.K.
2. Centre for Palaeobiology and Biosphere Evolution and School of Museum Studies, University of Leicester, University Road, Leicester LE1 7RH, U.K.,
3. Human Anatomy Resource Centre, University of Liverpool, Sherrington Building, Ashton Street, Liverpool L69 3GE, U.K.,
4. Fossil Reptiles, Amphibians, and Birds Section, Natural History Museum, Cromwell Road, London SW7 5BD, U.K.,
5. School of Geography, Earth & Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.,
6. Conservation Centre, Natural History Museum, Cromwell Road, London SW7 5BD, U.K.,