Fig. 2

Positions of the seventeen landmarks that were used to study neurocranial shape change. For definitions see Additional file 1: Table S4. a specimen of the genus Cathorops with landmarks superimposed (photo credit: Madlen Stange); (b) neurocranium (Cathorops arenatus [photo credit: Catfish Bones – The Digital Atlas Of Catfish Morphology, http://catfishbone.ansp.org/]) in dorsal, ventral, and lateral view with numbered landmarks and relevant skeletal structures named; (c) wireframe connecting the landmarks, that are used for illustration of shape changes