Let's introduce some mystery here.  Below are the 2 halves of a large sheet of paper depicting cephalopods' exterior and interior features.  The text is in French, German and Dutch, but not always all three.  I have similar sheets for snakes, raptors and several other animal categories.  But what are they?  Or why is the layout what it is, more precisely.  The paper's much too thin for them to've been meant to be cut into cards.  Whatever their educational use was, I find them eye-pleasing.