![cover|150](http://books.google.com/books/content?id=9btSBgAAQBAJ&printsec=frontcover&img=1&zoom=1&edge=curl&source=gbs_api) *Helen Scales* # Progressive Summary # Definitions # Chapter Notes ## Chapter 1 - Meet the Shell-makers Lots of fascinating information in here. Molluscs are the 2nd largest phyla after insects (anthropods), with an estimate of about 200,000 species. # Quotes # References