EDIT:
iatriki posted this great link, which is a full version:
University of Wisconsin - Full Atlas of Animal Anatomy for artists by William Ellenberger
Just found this:[b]
Great free online reference (limited number of pages displayed):[/b]
[b][Google Books: An Atlas of Animal Anatomy for Artists By Wilhelm Ellenberger](http://books.google.com/books?id=vaPHlOt2RdAC&dq=ellenberger+animal+anatomy&pg=PP1&ots=9ryikHifWT&sig=dts5EUprZvMnj_eIIFxuHPjjY5Y&hl=en&prev=http://www.google.com/search%3Fhl%3Den%26q%3Dellenberger%2B%252B%2Banimal%2Banatomy%26btnG%3DSearch&sa=X&oi=print&ct=title&cad=one-book-with-thumbnail#PPP1,M1)[/b]