::Thankyou, DavidP, and others,  for your patience.  

 ::The fun part of this project seems to be  assembling (or watching others assemble) the details for each country, period, and genre.  The current section on Buddhist art, for example, really floored me with that picture from Afghanistan.  I'd never seen anything quite like it from China, Tibet, or India. 

 ::I'm going to be working on the genre I've called "Modern classicism"   because that's what interests me the most. I've started out with a description of the Greco-Roman classical tradition, which I hope others will amend as necessary. 

  
 ::Some of the best contributions so far have come from CARPTRASH.  He documents each of his entries with references and pictures that he has taken himself  and he doesn't just write about the famous sculptors  that everybody knows. 

 :::Regarding the listing of "Genres" of contemporary sculpture, I see your point about distinguishing genres from forms or materials  but have no idea how to do it. 

 :::BTW  I didn't touch the spelling of aluminium/aluminum. My spelling is so bad, I have yet to notice, much less correct, the possible mistakes of others.