hindgut proper primordium pHiGP2 FBbt:00000441 fly_anatomy.ontology P2 pHiGP A(n) primordium that develops into some rectum primordium and some large intestine primordium and some small intestine primordium and some embryonic primordium of adult hindgut precursor. It develops from some inclusive hindgut primordium. FBbt:00000441 Drosophila embryonic structure