Fig. 2From: Cranial shape diversification in horses: variation and covariation patterns under the impact of artificial selectionAlternative partitions of the horse skull with model 1: no module; model 2: ossification (DER dermal, END endochondral); model 3: tissue origin (NC neural crest, PM paraxial mesoderm); model 4: mammalian (AON anterior oral-nasal, ORB orbital, MOL molar, CB basicranium, ZP zygomatic-pterygoid, CV cranial vault); model 5: functional (ORA oral, NAS nasal, OB orbital, MAS masticatory, BAS basicranium, VAU vault)Back to article page