Fig. 2: Phylomorphospace of anuran skull variation.
From: Size, microhabitat, and loss of larval feeding drive cranial diversification in frogs
Each specimen’s location is coloured by microhabitat and the symbols indicate larval feeding. The maximum morphospace occupation for fossorial (including semi-fossorial) and aquatic (including semi-aquatic) species is illustrated by shading in the respective regions brown and blue. Specimen meshes are included to demonstrate the general shape differences between fossorial (Nasikabatrachus sahyadrensis) and aquatic (Pipa parva) species, as well as the specimens with the largest (Conraua goliath) and smallest (Stumpffia pygmaea) crania. Extreme shapes along both axes are visualised (in lateral aspect) by deforming the shape data along each axis and are coloured by cranial region (see Supplementary Fig. 1). Estimated cranial morphology at minimum and maximum cranial size is also presented, shown in dorsal (top) and lateral (bottom) aspects. Landmark data were mirrored for visualisation purposes only.
