part of rectal diverticulum development pronephric rectal diverticulum development GO:0039009 2010-07-02T09:48:58Z bf The process whose specific outcome is the progression of the rectal diverticulum over time, from its formation to the mature structure. The rectal diverticulum is an outgrowth of the cloaca and links the pronephric kidney to the exterior. biological_process pronephros development anatomical structure development