in taxon contributes to morphology of Monotremata Eutheria Homo sapiens telencephalon corpus callosum http://upload.wikimedia.org/wikipedia/commons/a/aa/Gray733.png https://cdn.humanatlas.io/digital-objects/ref-organ/brain-female/v1.4/assets/3d-allen-f-brain.glb https://cdn.humanatlas.io/digital-objects/ref-organ/brain-male/v1.4/assets/3d-allen-m-brain.glb BAMS:cc BAMS:CC GAID:683 BIRNLEX:1087 The corpus callosum is found only in placental mammals. other groups do have other brain structures that allow for communication between the two hemispheres, such as the anterior commissure, which serves as the primary mode of interhemispheric communication in marsupials. neuronames:191 MBA:776 In addition to the anterior commissure, placental mammals have a phylogenetically new forebrain commissure, the corpus callosum, which primarily interconnects the neocortex of the cerebral hemispheres.[well established][VHOG] NCIT:C12446 MIAA:0000286 DHBA:10561 MESH:D003337 MAT:0000286 CALOHA:TS-0180 MA:0000188 The largest commissure of the brain connecting the cerebral hemispheres. [TFD][VHOG] FMA:86464 UBERON:0002336 HBA:9222 BTO:0000615 BM:Tel-CC EV:0100305 VHOG:0001608 SCTID:362354006 EFO:0001390 EMAPA:35253 UMLS:C0010090 White matter structure containing massive numbers of commissural fibers connecting cortical areas in the two cerebral hemispheres. It is subdivided into a genu, a rostrum, a body, and a splenium. (MM). Wikipedia:Corpus_callosum intercerebral commissure dorsal telencephalic commissure