ellipsoid body inner posterior domain The 'posterior ring' of Hanesch et al. (1989) and 'posterior disk' of Renn et al. (1999) appear to refer to EBop and EBip collectively. The 'posterior shell' of Wolff et al. (2015) also refers to EBop and EBip collectively (Omoto et al., 2018). fly_anatomy.ontology VFB:FBbt_00007555 Inner concentric subdivision of the posterior part of the ellipsoid body. It contains the arborization of R1 ring neurons, which mark the boundary between the inner and outer posterior domains (Omoto et al., 2018). ellipsoid body posterior disk posterior inner ring of EB ellipsoid body posterior ring EBip EBC ellipsoid body center ring FBbt:00007555 ellipsoid body inner ring ellipsoid body posterior shell EBr1 ellipsoid body layer