I learned recently that while the #EvoDevo and #phylogenomics literature overwhelmingly use the term #Metazoa, it is an obsolete junior synonym to #Animalia. #zoology
#NCBI taxonomy uses Metazoa, consistent with the use in molecular fields https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=33208&lvl=3&lin=f&keep=1&srchmode=1&unlock
but @gbif uses Animalia https://www.gbif.org/species/1, as does @Wikipedia https://en.wikipedia.org/wiki/Animal
As for #ICZN, they don't seem to care for modern concerns about phylogeny and such http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/loadcachedpage?url=animalbase-code.html