1. Département Adaptations du Vivant, UMR 7179 CNRS/MNHN, 57 rue Cuvier, Case postale 55, 75231, Paris Cedex 5, France.
2. Evolutionary Morphology of Vertebrates, Ghent University, Campus Ledeganck, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
3. UGCT—Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, 9000 Ghent, Belgium.
4. Centro de Biofı́sica y Biochı́mica, Instituto de Investigaciones Cientı́ficas (IVIC), Caracas, Venezuela.