A "generalized mollusk"
An anatomical diagram of a hypothetical ancestral mollusk, showing features common to many mollusk types.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Archimollusc-en.svg."
http://en.wikipedia.org/wiki/File:Archimollusc-en.svg
Wikipedia
CC BY-SA 3.0.
