part of part of has part has part in taxon results in formation of anatomical entity chorion-containing eggshell formation GO:0007304 eggshell formation The construction of a chorion-containing eggshell. An example of this is found in Drosophila melanogaster. egg chorion assembly eggshell formation follicle cell of egg chamber development anatomical structure formation involved in morphogenesis Insecta chorion-containing eggshell