part of develops into anterior ectoderm developing embryonic structure anlage ectoderm anlage anterior ectoderm anlage Anlage that develops into the anterior ectoderm. It is found anterior to the dorsal, lateral and ventral regions of the ectoderm anlage and posterior to the anterior endoderm anlage at the cellular blastoderm stage, prior to gastrulation (Stathopoulos and Newcomb, 2020). FBbt:01000119 fly_anatomy.ontology